Glycerin as a humectant

Glycerin, also called glycerol, is a humectant that helps attract and hold water in the outer skin layer. This makes it useful in moisturizing formulas.¹ The finished formula matters: a glycerin-containing wash rinses away, while a cream leaves moisturizing ingredients on the skin.

In a shampoo or body wash, glycerin supports the formula alongside the cleansing ingredients. It is not a substitute for those cleansers, and seeing glycerin on the label does not mean a wash is simply liquid soap.

Humectants, emollients and occlusives

A complete moisturizer can combine these roles. Happy Cappy Moisturizing Cream includes glycerin and petrolatum, while the washes are designed to cleanse and rinse away. One shared ingredient does not make a wash and a cream equivalent.

Glycerin in the three Happy Cappy formulas

The Daily wash pairs glycerin with ingredients such as hyaluronic acid and panthenol. The Medicated wash includes glycerin in the supporting formula around its active ingredient, pyrithione zinc 0.95%. The cream combines glycerin with ingredients suited to leave-on moisture.

All three also contain dipotassium glycyrrhizate, a licorice-derived conditioning ingredient. This pairing explains a formula choice; it does not prove that the products reproduce results from a study of another moisturizer.

Washing and leave-on moisture

Use the Daily wash daily or as often as needed for everyday cleansing. After washing, a leave-on moisturizer can provide a separate moisturizing step. If you are using the Medicated wash, choose it for its labeled dandruff and seborrheic dermatitis uses.

If skin still feels dry, assess the complete routine rather than assuming one more humectant will solve the problem. The choice of cleanser, how the skin feels after washing and the moisturizer all matter.

Glycerin sources

Glycerin in cosmetics can come from different sources, including plant or animal fats, or be made synthetically. The ingredient name alone does not identify its origin. Read more about glycerin sources.

Happy Cappy uses plant-derived glycerin. For the distinction between ingredient sourcing and animal-testing policy, see the vegan shampoo guide.

Sources and formula details

• Breternitz M, et al. Placebo-controlled study of a glycerol-based emollient on eczematous skin. 2008. Ingredient/formulation evidence; not a trial of Happy Cappy.
• CosmeticsInfo: glycerin
• Happy Cappy ingredient hub: current formula lists