What is it?

Progesterone is an endogenous steroid and progestogen sex hormone involved in the menstrual cycle, pregnancy, and embryogenesis of humans and other species. It has the chemical formula C21H30O2.” Progesterone wiki

Progesterone side effects

This substance belongs to the groups:

Progesterone belongs to the steroid hormones and may be derived from animals. It is listed on the organization People for the Ethical Treatment of Animals’ (PETA) “Animal-derived Ingredient List”. PETA also mentions that there are synthetic alternatives to this substance. However, the ingredient will be named the same no matter how it is sourced (vegan or non-vegan).

Check the product’s labels, look for vegan stamps or ask the manufacturer if you want to make sure the ingredients and the product is vegan.

Progesterone is on the Red List from Campaign for Safe Cosmetics. Which is a list they have gathered containing ingredients that are of serious health concern. In other words, advisable to avoid. They list progesterone as a reasonably anticipated and probable carcinogen.

The European Chemicals Agency (ECHA) classifies progesterone as follows

  • CMR substance: meaning that it belongs to a group of chemicals that have been established to be carcinogenic, mutagenic or toxic for reproduction.
  • May damage fertility  / is suspected of damaging fertility
  • May damage the unborn child / is suspected of damaging the unborn child
  • May cause cancer / is suspected of causing cancer, is suspected of damaging fertility or the unborn child

How is it used?

Progesterone is used as a skin-conditioning agent (maintains the skin in good condition) and against hair loss in cosmetic products*.  This ingredient is also marketed as being able to could enhance cell growth and differentiation by increasing the natural production of the epidermal growth factor (EGF) in the body.

The substance can be found in products such as creams (especially anti-wrinkle creams), hair conditioners, hair styling products, and skin moisturizers.

We use the European Commissions definition of Cosmetics:
“Cosmetics range from everyday hygiene products such as soap, shampoo, deodorant, and toothpaste to luxury beauty items including perfumes and makeup”.

Read about the other ingredients.


Did you find this ingredient in a product?

Comment and share with a link!