How to make a TEWL reducing nighttime facial lotion without synthetic ingredients?
There’s some demand for a nighttime facial lotion/cream that’s great at reducing TEWL with good sensorials (not extremely waxy) and without synthetic ingredients (e.g. petrolatum, dimethicone or even hydrogenated vegetable oils).
I’ve proposed some tentative ingredients to go into an emulsion below with some % guesstimates for now. Let me know if you have suggestions for how to ensure TEWL is kept to a minimum!Humectants1% Urea1% Hyaluronic Acid (molecular weight is important)0.5% Allantoin1% Panthenol2.5% Sodium LactateOcclusives5% Beeswax (refined)
5% Lanolin (water based)
3% Soy Lecithin (could be used as an emulsifier in conjunction with beeswax + borax)
4% Shea Butter (some occlusive effect too)4% Chia Seed Oil4% Squalene (not squalane)
Other1% Lactic Acid to adjust pH to 4?