Using HEC with Salicylic Acid, Niacinamide and Azelaic Acid?
I got an email question about formulating with HEC (hydroxyethyl cellulose), salicylic acid, niacinamide and azelaic acid. Immediately I was...
I got an email question about formulating with HEC (hydroxyethyl cellulose), salicylic acid, niacinamide and azelaic acid. Immediately I was...
Shea Azelaic Cream Serum - Tester makes approx 50 grams (fits 3.5oz container) What's This: The Tester Formulas are small...