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In this series on the role dermatologists have played in the history of skin care, I have covered dermatologists who developed cosmeceutical ingredients, dermatologists who consulted for the skin care industry, and those who developed a novel and successful skin care line. In this column, part 4 of the series, I will continue to discuss the role that dermatologists have played in developing skin care products and devices used in the skin care and beauty industry.
 

Dermatologists and Stiefel Laboratories

The Stiefel Medicinal Soap Company, founded in 1847, later became Stiefel Laboratories and was sold to GlaxoSmithKline in 2009. Stiefel Laboratories made many contributions over the years to the field of dermatology as chronicled in the excellent book, Skin Saga” written by Charles Stiefel and published in 2018. The company was first known for soaps and groundbreaking products, such as “Freckle Soap” that sped epidermal turnover, resulting in a more even toned complexion.

Courtesy of Dr. Leslie Baumann
The Stiefel Medicinal Soap Company was first known for soaps and groundbreaking products, such as 'Freckle Soap' that sped epidermal turnover, resulting in a more even toned complexion.


Many dermatologists were involved in developing products and providing advice to the company. Herman Sharlit, MD, in New York, had the idea for a moisturizing soap (Oilatum), a detergent soap (Acne Aid detergent soap), and a coal tar soap (Polytar). Eugene Farber, MD, who was professor and chairman of the department of dermatology at Stanford (Calif.) University, consulted for Stiefel Laboratories and helped them identify and develop many products over the years.1 Stiefel Labs came out with the first facial scrub called Brasivol, an abrasive cream with aluminum oxide particles – the predecessor to modern day microdermabrasion. This facial scrub was conceived by dermatologist Rose Saperstein, MD, Los Angeles, who published a report2 on this in 1960 and also received a patent for it in 1963.3 Brasivol became the company’s first million dollar product.1

Stiefel Laboratories worked with many dermatologists to help them develop their ideas. They included Cleveland White, MD, who patented a highly absorbent foot and body powder known as Zeasorb powder. William Pace, MD, was a Canadian dermatologist who patented an acne treatment containing benzoyl peroxide and sulfur that Stiefel Labs marketed as Sulfoxyl Lotion. Dr. Pace is lovingly referred to as “the father of benzoyl peroxide” because his idea led Stiefel Labs to develop more benzoyl peroxide products. Benzoyl peroxide remains the most popular OTC ingredient to treat acne.

Comedone extractors

Many dermatologists have developed ways to extract comedones. There are publications on using paper clips,4,5safety pins,6 and medicine droppers,7 but some dermatologists have developed special comedone extractors, which include the following: Jay Schamberg, MD, developed a comedone extractor with a loop at each end. He disapproved of cutting a comedone, so did not include a needle or scalpel in his extractor.8

  • Leonard Savitt, MD,9 attached a scalpel to one end of the Schamberg extractor.
  • Alan Shalita, MD, developed a comedone extractor with a large, keyhole-shaped extracting orifice that made the tool easier to clean.10

The Saalfield comedone extractor combines a fixed pointed blade at one end and a small spoon-shaped expressor foot at the other end. (However, I have not been able to determine if Saalfield was a dermatologist.)
 

 

 

Dermatologist who developed methods for lesion excisions

Robert Segal, MD, a dermatologist at the University of Arizona, Tucson, invented the Dermablade. Although this is technically not a beauty device, I am including it because it has made the removal of unsightly moles and lesions much easier. He holds six patents on this device.

Dermatologists developed dermabrasion and microneedling

Ernst Kromayer, MD,11 a dermatologist in Germany, first described microneedling in 1905 when he mounted dental burrs on motor-driven flexible cord equipment to treat scars. Abner Kurtin, MD, a New York dermatologist, learned about Dr. Kromayer’s technique and modified it using stainless wireless brushes. Dr. Kurtin is known as the “father of dermabrasion.” His work was noted by Nobel Laureate Alexis Carrel, MD, who moved to New York City and began using the technique. Dr. Carrel’s protege, New York dermatologist, Norman Orentreich, MD, began using hypodermic needles instead of wire brushes. Microneedling has gained much popularity over the last decade and has been combined with platelet rich plasma injections.

Dermatologist-developed injection to shrink fat

Adam Rotunda, MD, was a dermatology resident at the University of California, Los Angeles, when he and his professor Michael Kolodney, MD, PhD, had the idea to develop deoxycholate as an injectable to reduce fat deposits. They filed a patent in 2004, conducted clinical trials, and it worked! In 2009, the patent for deoxycholic acid (ATX-10), marketed as Kybella, was granted. The rights to the drug were purchased by Aestherx, which later became Kythera Biopharmaceuticals. Kybella received Food and Drug Administration approval in 2015, and 6 months later, Kythera was acquired by Allergan.

Development of FDA-approved drugs to improve skin appearance

In 2004, dermatologists Stuart Shanler, MD, and Andrew Ondo, MD, filed a patent for the use of topical oxymetazoline for the treatment of the erythema of rosacea. They published their observations in 2007, noting that oxymetazoline improved facial flushing and erythema.11 Dr. Shanler then teamed up with dermatologist Neal Walker, MD, to form a start-up pharmaceutical company, Vicept Therapeutics, and took this compound through phase 2 clinical trials, while Dr. Shanler filed additional patents on oxymetazoline compositions and their uses. Once they successfully demonstrated the efficacy of topical oxymetazoline for rosacea, Allergan acquired the rights of the drug, successfully completed the phase 3 clinical trials, and Rhofade was approved by the FDA in 2017. It is the only topical drug invented and developed by a dermatologist to receive FDA approval since tretinoin (Renova) was developed by Albert Kligman, MD, and approved by the FDA for the improvement in appearance of fine wrinkling, mottled hyperpigmentation and roughness associated with photodamage in 1992.

The development of lasers

The last dermatologist I will discuss in this history series is R. Rox Anderson, MD, professor of dermatology at Harvard University, and director of the Wellman Center for Photomedicine at Massachusetts General Hospital, Boston. It is impossible to list all his contributions in such a limited space. It would take a book. Building on efforts pioneered by Leon Goldman, MD, Dr. Anderson and his associates pioneered the use of lasers in dermatology and invented the idea of photothermolysis when they filed a patent on using light to remove hair in 1995.Dieter Manstein, MD, PhD,Dr. Anderson and others filed many patents that led to devices such as hair removal lasers, resurfacing lasers, and Fraxel lasers. They also made discoveries related to using cold to shrink fat. One of their inventions is known as CoolSculpting. They were so influential in the development of cosmetic dermatology that it is hard to imagine the field without their contributions.

This concludes my four-part series on the history of dermatologists’ role in the development of the skin care industry. I hope I have not forgotten anyone; if I did, I apologize. I have asked for ideas on Dermchat, Facebook and LinkedIn. Feel free to reach out if I missed one of your contributions. I will be giving lectures on this topic in the future and would be happy to include anyone I missed.

Dr. Leslie S. Baumann


As the year 2020 ends, I want to say, Happy 50th Anniversary Dermatology News! I hope you enjoyed this historical series in honor of this anniversary.
 

Dr. Baumann is a private practice dermatologist, researcher, author, and entrepreneur who practices in Miami. She founded the Cosmetic Dermatology Center at the University of Miami in 1997. Dr. Baumann has written two textbooks and a New York Times Best Sellers book for consumers. Dr. Baumann has received funding for advisory boards and/or clinical research trials from Allergan, Galderma, Revance, Evolus, and Burt’s Bees. She is the CEO of Skin Type Solutions Inc., a company that independently tests skin care products and makes recommendations to physicians on which skin care technologies are best. Write to her at dermnews@mdedge.com.

References

1. Stiefel, CW. (n.d.). Skin Saga: How a Tiny Family Soap Business Evolved Over Six Generations Into the #1 Dermatology Company in the World. United States: Smart Business Network.

2. Saperstein, RB. Arch Dermatol. 1960 Apr;81:601.

3. Saperstein, RB, and Stiefel, WK (1963). U.S. Patent No. 3,092,111. Washington, DC: U.S. Patent and Trademark Office.

4. George DE et al. J Am Acad Dermatol. 2006 Feb;54(2):326.

5. Cvancara JL, Meffert JJ. J Am Acad Dermatol. 1999 Mar;40(3):477-8.

6. Mukhtar M., Sharma R. Int J Dermatol. 2004 Dec;43(12):967-8.

7. Shellow, H. JAMA. 1951;147(18):1777.

8. Wright CS. Arch Dermatol. 1961;84(3):515.

9. Savitt LE. Arch Dermatol. 1961 Apr;83:660-1.

10. Shalita AR, Harris H. Arch Dermatol. 1972 May;105(5):759-60.

11. Shanler SD, Ondo AL. Arch Dermatol. 2007 Nov;143(11):1369-71.

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In this series on the role dermatologists have played in the history of skin care, I have covered dermatologists who developed cosmeceutical ingredients, dermatologists who consulted for the skin care industry, and those who developed a novel and successful skin care line. In this column, part 4 of the series, I will continue to discuss the role that dermatologists have played in developing skin care products and devices used in the skin care and beauty industry.
 

Dermatologists and Stiefel Laboratories

The Stiefel Medicinal Soap Company, founded in 1847, later became Stiefel Laboratories and was sold to GlaxoSmithKline in 2009. Stiefel Laboratories made many contributions over the years to the field of dermatology as chronicled in the excellent book, Skin Saga” written by Charles Stiefel and published in 2018. The company was first known for soaps and groundbreaking products, such as “Freckle Soap” that sped epidermal turnover, resulting in a more even toned complexion.

Courtesy of Dr. Leslie Baumann
The Stiefel Medicinal Soap Company was first known for soaps and groundbreaking products, such as 'Freckle Soap' that sped epidermal turnover, resulting in a more even toned complexion.


Many dermatologists were involved in developing products and providing advice to the company. Herman Sharlit, MD, in New York, had the idea for a moisturizing soap (Oilatum), a detergent soap (Acne Aid detergent soap), and a coal tar soap (Polytar). Eugene Farber, MD, who was professor and chairman of the department of dermatology at Stanford (Calif.) University, consulted for Stiefel Laboratories and helped them identify and develop many products over the years.1 Stiefel Labs came out with the first facial scrub called Brasivol, an abrasive cream with aluminum oxide particles – the predecessor to modern day microdermabrasion. This facial scrub was conceived by dermatologist Rose Saperstein, MD, Los Angeles, who published a report2 on this in 1960 and also received a patent for it in 1963.3 Brasivol became the company’s first million dollar product.1

Stiefel Laboratories worked with many dermatologists to help them develop their ideas. They included Cleveland White, MD, who patented a highly absorbent foot and body powder known as Zeasorb powder. William Pace, MD, was a Canadian dermatologist who patented an acne treatment containing benzoyl peroxide and sulfur that Stiefel Labs marketed as Sulfoxyl Lotion. Dr. Pace is lovingly referred to as “the father of benzoyl peroxide” because his idea led Stiefel Labs to develop more benzoyl peroxide products. Benzoyl peroxide remains the most popular OTC ingredient to treat acne.

Comedone extractors

Many dermatologists have developed ways to extract comedones. There are publications on using paper clips,4,5safety pins,6 and medicine droppers,7 but some dermatologists have developed special comedone extractors, which include the following: Jay Schamberg, MD, developed a comedone extractor with a loop at each end. He disapproved of cutting a comedone, so did not include a needle or scalpel in his extractor.8

  • Leonard Savitt, MD,9 attached a scalpel to one end of the Schamberg extractor.
  • Alan Shalita, MD, developed a comedone extractor with a large, keyhole-shaped extracting orifice that made the tool easier to clean.10

The Saalfield comedone extractor combines a fixed pointed blade at one end and a small spoon-shaped expressor foot at the other end. (However, I have not been able to determine if Saalfield was a dermatologist.)
 

 

 

Dermatologist who developed methods for lesion excisions

Robert Segal, MD, a dermatologist at the University of Arizona, Tucson, invented the Dermablade. Although this is technically not a beauty device, I am including it because it has made the removal of unsightly moles and lesions much easier. He holds six patents on this device.

Dermatologists developed dermabrasion and microneedling

Ernst Kromayer, MD,11 a dermatologist in Germany, first described microneedling in 1905 when he mounted dental burrs on motor-driven flexible cord equipment to treat scars. Abner Kurtin, MD, a New York dermatologist, learned about Dr. Kromayer’s technique and modified it using stainless wireless brushes. Dr. Kurtin is known as the “father of dermabrasion.” His work was noted by Nobel Laureate Alexis Carrel, MD, who moved to New York City and began using the technique. Dr. Carrel’s protege, New York dermatologist, Norman Orentreich, MD, began using hypodermic needles instead of wire brushes. Microneedling has gained much popularity over the last decade and has been combined with platelet rich plasma injections.

Dermatologist-developed injection to shrink fat

Adam Rotunda, MD, was a dermatology resident at the University of California, Los Angeles, when he and his professor Michael Kolodney, MD, PhD, had the idea to develop deoxycholate as an injectable to reduce fat deposits. They filed a patent in 2004, conducted clinical trials, and it worked! In 2009, the patent for deoxycholic acid (ATX-10), marketed as Kybella, was granted. The rights to the drug were purchased by Aestherx, which later became Kythera Biopharmaceuticals. Kybella received Food and Drug Administration approval in 2015, and 6 months later, Kythera was acquired by Allergan.

Development of FDA-approved drugs to improve skin appearance

In 2004, dermatologists Stuart Shanler, MD, and Andrew Ondo, MD, filed a patent for the use of topical oxymetazoline for the treatment of the erythema of rosacea. They published their observations in 2007, noting that oxymetazoline improved facial flushing and erythema.11 Dr. Shanler then teamed up with dermatologist Neal Walker, MD, to form a start-up pharmaceutical company, Vicept Therapeutics, and took this compound through phase 2 clinical trials, while Dr. Shanler filed additional patents on oxymetazoline compositions and their uses. Once they successfully demonstrated the efficacy of topical oxymetazoline for rosacea, Allergan acquired the rights of the drug, successfully completed the phase 3 clinical trials, and Rhofade was approved by the FDA in 2017. It is the only topical drug invented and developed by a dermatologist to receive FDA approval since tretinoin (Renova) was developed by Albert Kligman, MD, and approved by the FDA for the improvement in appearance of fine wrinkling, mottled hyperpigmentation and roughness associated with photodamage in 1992.

The development of lasers

The last dermatologist I will discuss in this history series is R. Rox Anderson, MD, professor of dermatology at Harvard University, and director of the Wellman Center for Photomedicine at Massachusetts General Hospital, Boston. It is impossible to list all his contributions in such a limited space. It would take a book. Building on efforts pioneered by Leon Goldman, MD, Dr. Anderson and his associates pioneered the use of lasers in dermatology and invented the idea of photothermolysis when they filed a patent on using light to remove hair in 1995.Dieter Manstein, MD, PhD,Dr. Anderson and others filed many patents that led to devices such as hair removal lasers, resurfacing lasers, and Fraxel lasers. They also made discoveries related to using cold to shrink fat. One of their inventions is known as CoolSculpting. They were so influential in the development of cosmetic dermatology that it is hard to imagine the field without their contributions.

This concludes my four-part series on the history of dermatologists’ role in the development of the skin care industry. I hope I have not forgotten anyone; if I did, I apologize. I have asked for ideas on Dermchat, Facebook and LinkedIn. Feel free to reach out if I missed one of your contributions. I will be giving lectures on this topic in the future and would be happy to include anyone I missed.

Dr. Leslie S. Baumann


As the year 2020 ends, I want to say, Happy 50th Anniversary Dermatology News! I hope you enjoyed this historical series in honor of this anniversary.
 

Dr. Baumann is a private practice dermatologist, researcher, author, and entrepreneur who practices in Miami. She founded the Cosmetic Dermatology Center at the University of Miami in 1997. Dr. Baumann has written two textbooks and a New York Times Best Sellers book for consumers. Dr. Baumann has received funding for advisory boards and/or clinical research trials from Allergan, Galderma, Revance, Evolus, and Burt’s Bees. She is the CEO of Skin Type Solutions Inc., a company that independently tests skin care products and makes recommendations to physicians on which skin care technologies are best. Write to her at dermnews@mdedge.com.

References

1. Stiefel, CW. (n.d.). Skin Saga: How a Tiny Family Soap Business Evolved Over Six Generations Into the #1 Dermatology Company in the World. United States: Smart Business Network.

2. Saperstein, RB. Arch Dermatol. 1960 Apr;81:601.

3. Saperstein, RB, and Stiefel, WK (1963). U.S. Patent No. 3,092,111. Washington, DC: U.S. Patent and Trademark Office.

4. George DE et al. J Am Acad Dermatol. 2006 Feb;54(2):326.

5. Cvancara JL, Meffert JJ. J Am Acad Dermatol. 1999 Mar;40(3):477-8.

6. Mukhtar M., Sharma R. Int J Dermatol. 2004 Dec;43(12):967-8.

7. Shellow, H. JAMA. 1951;147(18):1777.

8. Wright CS. Arch Dermatol. 1961;84(3):515.

9. Savitt LE. Arch Dermatol. 1961 Apr;83:660-1.

10. Shalita AR, Harris H. Arch Dermatol. 1972 May;105(5):759-60.

11. Shanler SD, Ondo AL. Arch Dermatol. 2007 Nov;143(11):1369-71.

In this series on the role dermatologists have played in the history of skin care, I have covered dermatologists who developed cosmeceutical ingredients, dermatologists who consulted for the skin care industry, and those who developed a novel and successful skin care line. In this column, part 4 of the series, I will continue to discuss the role that dermatologists have played in developing skin care products and devices used in the skin care and beauty industry.
 

Dermatologists and Stiefel Laboratories

The Stiefel Medicinal Soap Company, founded in 1847, later became Stiefel Laboratories and was sold to GlaxoSmithKline in 2009. Stiefel Laboratories made many contributions over the years to the field of dermatology as chronicled in the excellent book, Skin Saga” written by Charles Stiefel and published in 2018. The company was first known for soaps and groundbreaking products, such as “Freckle Soap” that sped epidermal turnover, resulting in a more even toned complexion.

Courtesy of Dr. Leslie Baumann
The Stiefel Medicinal Soap Company was first known for soaps and groundbreaking products, such as 'Freckle Soap' that sped epidermal turnover, resulting in a more even toned complexion.


Many dermatologists were involved in developing products and providing advice to the company. Herman Sharlit, MD, in New York, had the idea for a moisturizing soap (Oilatum), a detergent soap (Acne Aid detergent soap), and a coal tar soap (Polytar). Eugene Farber, MD, who was professor and chairman of the department of dermatology at Stanford (Calif.) University, consulted for Stiefel Laboratories and helped them identify and develop many products over the years.1 Stiefel Labs came out with the first facial scrub called Brasivol, an abrasive cream with aluminum oxide particles – the predecessor to modern day microdermabrasion. This facial scrub was conceived by dermatologist Rose Saperstein, MD, Los Angeles, who published a report2 on this in 1960 and also received a patent for it in 1963.3 Brasivol became the company’s first million dollar product.1

Stiefel Laboratories worked with many dermatologists to help them develop their ideas. They included Cleveland White, MD, who patented a highly absorbent foot and body powder known as Zeasorb powder. William Pace, MD, was a Canadian dermatologist who patented an acne treatment containing benzoyl peroxide and sulfur that Stiefel Labs marketed as Sulfoxyl Lotion. Dr. Pace is lovingly referred to as “the father of benzoyl peroxide” because his idea led Stiefel Labs to develop more benzoyl peroxide products. Benzoyl peroxide remains the most popular OTC ingredient to treat acne.

Comedone extractors

Many dermatologists have developed ways to extract comedones. There are publications on using paper clips,4,5safety pins,6 and medicine droppers,7 but some dermatologists have developed special comedone extractors, which include the following: Jay Schamberg, MD, developed a comedone extractor with a loop at each end. He disapproved of cutting a comedone, so did not include a needle or scalpel in his extractor.8

  • Leonard Savitt, MD,9 attached a scalpel to one end of the Schamberg extractor.
  • Alan Shalita, MD, developed a comedone extractor with a large, keyhole-shaped extracting orifice that made the tool easier to clean.10

The Saalfield comedone extractor combines a fixed pointed blade at one end and a small spoon-shaped expressor foot at the other end. (However, I have not been able to determine if Saalfield was a dermatologist.)
 

 

 

Dermatologist who developed methods for lesion excisions

Robert Segal, MD, a dermatologist at the University of Arizona, Tucson, invented the Dermablade. Although this is technically not a beauty device, I am including it because it has made the removal of unsightly moles and lesions much easier. He holds six patents on this device.

Dermatologists developed dermabrasion and microneedling

Ernst Kromayer, MD,11 a dermatologist in Germany, first described microneedling in 1905 when he mounted dental burrs on motor-driven flexible cord equipment to treat scars. Abner Kurtin, MD, a New York dermatologist, learned about Dr. Kromayer’s technique and modified it using stainless wireless brushes. Dr. Kurtin is known as the “father of dermabrasion.” His work was noted by Nobel Laureate Alexis Carrel, MD, who moved to New York City and began using the technique. Dr. Carrel’s protege, New York dermatologist, Norman Orentreich, MD, began using hypodermic needles instead of wire brushes. Microneedling has gained much popularity over the last decade and has been combined with platelet rich plasma injections.

Dermatologist-developed injection to shrink fat

Adam Rotunda, MD, was a dermatology resident at the University of California, Los Angeles, when he and his professor Michael Kolodney, MD, PhD, had the idea to develop deoxycholate as an injectable to reduce fat deposits. They filed a patent in 2004, conducted clinical trials, and it worked! In 2009, the patent for deoxycholic acid (ATX-10), marketed as Kybella, was granted. The rights to the drug were purchased by Aestherx, which later became Kythera Biopharmaceuticals. Kybella received Food and Drug Administration approval in 2015, and 6 months later, Kythera was acquired by Allergan.

Development of FDA-approved drugs to improve skin appearance

In 2004, dermatologists Stuart Shanler, MD, and Andrew Ondo, MD, filed a patent for the use of topical oxymetazoline for the treatment of the erythema of rosacea. They published their observations in 2007, noting that oxymetazoline improved facial flushing and erythema.11 Dr. Shanler then teamed up with dermatologist Neal Walker, MD, to form a start-up pharmaceutical company, Vicept Therapeutics, and took this compound through phase 2 clinical trials, while Dr. Shanler filed additional patents on oxymetazoline compositions and their uses. Once they successfully demonstrated the efficacy of topical oxymetazoline for rosacea, Allergan acquired the rights of the drug, successfully completed the phase 3 clinical trials, and Rhofade was approved by the FDA in 2017. It is the only topical drug invented and developed by a dermatologist to receive FDA approval since tretinoin (Renova) was developed by Albert Kligman, MD, and approved by the FDA for the improvement in appearance of fine wrinkling, mottled hyperpigmentation and roughness associated with photodamage in 1992.

The development of lasers

The last dermatologist I will discuss in this history series is R. Rox Anderson, MD, professor of dermatology at Harvard University, and director of the Wellman Center for Photomedicine at Massachusetts General Hospital, Boston. It is impossible to list all his contributions in such a limited space. It would take a book. Building on efforts pioneered by Leon Goldman, MD, Dr. Anderson and his associates pioneered the use of lasers in dermatology and invented the idea of photothermolysis when they filed a patent on using light to remove hair in 1995.Dieter Manstein, MD, PhD,Dr. Anderson and others filed many patents that led to devices such as hair removal lasers, resurfacing lasers, and Fraxel lasers. They also made discoveries related to using cold to shrink fat. One of their inventions is known as CoolSculpting. They were so influential in the development of cosmetic dermatology that it is hard to imagine the field without their contributions.

This concludes my four-part series on the history of dermatologists’ role in the development of the skin care industry. I hope I have not forgotten anyone; if I did, I apologize. I have asked for ideas on Dermchat, Facebook and LinkedIn. Feel free to reach out if I missed one of your contributions. I will be giving lectures on this topic in the future and would be happy to include anyone I missed.

Dr. Leslie S. Baumann


As the year 2020 ends, I want to say, Happy 50th Anniversary Dermatology News! I hope you enjoyed this historical series in honor of this anniversary.
 

Dr. Baumann is a private practice dermatologist, researcher, author, and entrepreneur who practices in Miami. She founded the Cosmetic Dermatology Center at the University of Miami in 1997. Dr. Baumann has written two textbooks and a New York Times Best Sellers book for consumers. Dr. Baumann has received funding for advisory boards and/or clinical research trials from Allergan, Galderma, Revance, Evolus, and Burt’s Bees. She is the CEO of Skin Type Solutions Inc., a company that independently tests skin care products and makes recommendations to physicians on which skin care technologies are best. Write to her at dermnews@mdedge.com.

References

1. Stiefel, CW. (n.d.). Skin Saga: How a Tiny Family Soap Business Evolved Over Six Generations Into the #1 Dermatology Company in the World. United States: Smart Business Network.

2. Saperstein, RB. Arch Dermatol. 1960 Apr;81:601.

3. Saperstein, RB, and Stiefel, WK (1963). U.S. Patent No. 3,092,111. Washington, DC: U.S. Patent and Trademark Office.

4. George DE et al. J Am Acad Dermatol. 2006 Feb;54(2):326.

5. Cvancara JL, Meffert JJ. J Am Acad Dermatol. 1999 Mar;40(3):477-8.

6. Mukhtar M., Sharma R. Int J Dermatol. 2004 Dec;43(12):967-8.

7. Shellow, H. JAMA. 1951;147(18):1777.

8. Wright CS. Arch Dermatol. 1961;84(3):515.

9. Savitt LE. Arch Dermatol. 1961 Apr;83:660-1.

10. Shalita AR, Harris H. Arch Dermatol. 1972 May;105(5):759-60.

11. Shanler SD, Ondo AL. Arch Dermatol. 2007 Nov;143(11):1369-71.

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