This patient information on Glyceryl Thioclycolate is provided by John L. Meisenheimer, M.D. a board certified Dermatologist and skin care specialist based in Orlando, Florida. This information is not intended as a substitute for the medical advice or treatment of a dermatologist or other physician.

The results from your patch testing showed a positive reaction (contact allergy) to glyceryl thioclycolate. Your immune system reacts with its defense mechanisms with each exposure of glyceryl thioclycolate to your skin. It is unknown why certain individuals develop allergic sensitivities. In some it may take repeat exposures over long periods of time before an allergy develops. Once you have become sensitized (allergic) your immune system always “remembers” and you will be glyceryl thioclycolate sensitive. If you currently have eczema this chemical may be the cause but other factors may play a role as well. The information below will help you avoid this allergen.

This is found in “acid” permanent wave formulas used in hair salons.

Where is chemical found?

Permanent wave acid solution

Hints on avoiding chemical:

Choose products listed only on your personalized Contact Allergen Database, which has been provided to you. Products listed on your contact allergen resource database will be free of Glyceryl Monothioglycolate and safe to use.
It may take 2 to 3 weeks of avoiding exposure before improvement of your eruption begins.

Other names you may see this chemical:

Acetic acid, mercapto-,monoester with 1,2,3-propanetriol
Acid permanent waves
Glycerol monomercaptoacetate
Glyceryl monothioglycolate
Glyceryl thioglycolate
Hot permanent waves
Mercaptoacetic acid, monoester with 1,2,3-propanetriol

Possible Occupational Exposures:


© John “Lucky” Meisenheimer, M.D.  2019