Boosts Scalp Hydration: Glycerin draws water into the scalp from the environment, which provides needed hydration, and according to Shamban, it prevents TEWL (Transepidermal Water Loss).
Regulates Sebum Production: The infusion of moisture from glycerin helps to regulate oil production in the scalp.
Antimicrobial Properties: The antimicrobial properties of glycerin can help treat itchiness caused by dryness or dandruff, Friese explains.
Moisturizer for Dry Hair: Glycerin is a natural humectant. This means that it will draw moisture to the hair and keep it there." glycerin has the ability to attach to the hair keratin preventing moisture evaporation.
Strengthens Hair: Hydration is an essential defense against hair breakage. Shamban explains that "optimal hydration and moisturization can strength, health and improve appearance of the hair.
Targets Frizz: Glycerin reduces hair dehydration, frizz, and breakage. Shamban suggests "it can therefore also work well for some types of natural hair to maintain or enhance the curl pattern and eliminate frizz.
Can Aid in Hair Growth: By contributing to scalp health, glycerin can contribute to new hair growth. Shamban clarifies that it should be considered a "great fertilizer helping plants to grow.