help check the formula of Vitamin C SERUM: 100g >> 80ml I want to use it for people over 35 years old. -White and bright face - ลดจุดด่างดำ Fix blemishes, freckles - ลดริ้วรอย on the face. prevent acne - Moisturise the face .................................................. .......... To modify Plea...
Help me see the recipe anti-aging below please. Is that usable? Please help me adjust the formula if I need to fix it. because mainly want to use the Centella Asiatica Extract (Madecassoside) ** NIGHT CREAM will change the water to Rose Water and add Evening Primrose Oil (Organic - Virgin, 10% GLA) ...
I would like to ask more questions. 1. The amount of active substances dissolved in water together must not be more than how many %? 2. The amount of water that must be used in the cream formula must be at least how many %? thank you
