Glossary
Esters formed from glycerol combined with one (monoglyceride), two (diglyceride), or three (triglyceride) fatty acid chains. Triglycerides are the primary lipid component of most plant oils and animal fats used in skincare. They serve as emollients, vitamins carriers, and barrier-repair agents in moisturizing formulations.
Triglycerides make up the majority of plant oils used in skincare: coconut oil is primarily lauric acid triglycerides, shea butter contains stearic and oleic acid triglycerides, and jojoba oil contains wax esters (technically not triglycerides, which is why it behaves differently). When these oils are applied to skin, lipase enzymes in the skin break down triglycerides into free fatty acids and glycerol, both of which nourish and hydrate.
Monoglycerides and diglycerides are used in skincare as emulsifiers and co-emulsifiers, helping oil and water blend in lotions and creams. Glyceryl monostearate and glyceryl monooleate are common examples found in many commercial formulations.
In natural, water-free skincare products, triglycerides are the primary active moisturizing compounds. When you apply a shea butter-based body butter, you are delivering triglycerides directly to your skin in their whole, unprocessed form alongside the fat-soluble vitamins and antioxidants naturally present in the butter.
This whole-ingredient approach delivers triglycerides in their natural molecular context, alongside phytosterols, tocopherols, and other minor compounds that enhance their effectiveness. Isolated triglycerides in synthetic formulations lack these companion molecules.
Yes. Triglycerides are the same class of molecules that make up human sebum and dietary fats. They are among the most well-tolerated skincare ingredients and are recognized by the skin as compatible, integrating readily into the lipid barrier.
Glycerol (glycerin) is the three-carbon alcohol backbone. A glyceride is glycerol bonded to fatty acid chains. In skincare, glycerol is a humectant (draws water), while glycerides are emollients (soften and protect). Both are beneficial but work through different mechanisms.
Natural plant oils (triglycerides) are broken down by skin enzymes into free fatty acids and glycerol, both of which actively nourish the skin and integrate into the lipid barrier. Mineral oil is inert; it sits on the surface as an occlusive barrier but does not provide nutritional benefit to the skin.
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