Although there are suppositions that yeast might be useful in cosmetics because of its antioxidant qualities. However, there really is not a lot of evidence that yeast will actually be helpful, and some forms of yeast are harmful to humans.
Because of its nutritional wealth, the yeast is very good for caring dry or dull skin, nail and brittle hair. The yeast is also effective against chronic forms of acne, because of its purifying and anti-bacterial properties.
The yeast fungus contains no more and no less than 16 amino acids, 14 minerals and 17 vitamins.
To benefit from cosmetic properties of yeast, it can be used in three forms: capsules, tablets or yeast itself. In cosmetics, in particular, it is used living yeast.