active
Hydrogenated Lecithin
A skin-identical phospholipid emulsifier and moisturiser used in spray formulations and emulsion systems. Its structural similarity to cell membrane phospholipids supports barrier-compatible emulsification.
Benefits
- Skin-identical phospholipid — structurally analogous to cell membrane components
- Emulsification at low concentrations
- Moisturising and barrier-support function
- Stabilises emulsions and dispersions
- Biodegradable and biocompatible
Example uses
- Spray mist formulations
- Liposomal encapsulation vehicles
- Emulsion stabilisation
- Serum-gel hybrids
- Sunscreen emulsions
Mechanism of action
Hydrogenated lecithin forms lamellar bilayer structures in aqueous media that mimic stratum corneum membrane architecture, enabling barrier-compatible emulsification. The phosphatidylcholine backbone integrates into the stratum corneum intercellular lipid bilayers, potentially supporting barrier repair. Emulsification occurs via the phospholipid's natural amphiphilic architecture without synthetic surfactant chemistry.
Clinical evidence · Moderate
Multiple studies on phospholipid emulsions and liposomal delivery. Specific RCTs for hydrogenated lecithin as a cosmetic emulsifier with barrier benefit limited.
Effective concentration range
0.5–3%
Formulation notes
Hydrogenation improves oxidative stability vs. non-hydrogenated lecithin. Compatible with most aqueous and oil-phase ingredients. Supports creation of lamellar liquid crystal emulsion structures. pH 4–8 effective range.
Watchouts
More expensive than conventional emulsifiers. Sourced primarily from soy or sunflower — cross-reactivity risk for soy-allergic individuals using soy-derived lecithin is theoretical but not clinically documented at cosmetic use levels.
Stacks with
Controversies & overclaims
No significant controversy. Soy sourcing may require allergen disclosure in certain markets.
Market positioning
Marketed as skin-identical emulsifier. The phospholipid structural analogy to cell membranes is accurate; the claim of meaningful barrier repair from emulsifier use should be distinguished from active barrier-repair actives.
Comedogenicity
0 / 5
Sensitisation risk
Low
INCI & aliases
Hydrogenated Lecithin
hydrogenated phosphatidylcholine · lecithin HP · hydrogenated soy lecithin
Clean beauty perception
Strongly accepted in clean beauty as a natural, skin-identical emulsifier. Soy and sunflower sources are well-regarded in clean formulation.
Related ingredients
Graph relationships
Timeline