Hello
Salicylic Acid can be in a formula that has The pH value ranges from acidic (3) to neutral (7), but if working as efficiently as possible The formula should have a pH of no more than 5
2.
Xanthan Gum Base, can you mix water-oil right away? If yes, how many % should there be no more than oil in the formula? (I want to have a little oil in the formula)
Xanthan Gum Can't combine water-oil. It can only act. Create a gel texture for the water. However, if members mix for their own use
Xanthan Gum will be able to cement the oil. A small amount (up to 3%) is compatible with water. But for a limited time, that is, in the long term, more than 1 week or more There is a high chance that the formula will separate more and more layers.
sunscreen formula should be separated from skin care formula. so that the formula has room to fill.
สารกันแดด to make the formula more effective at sun protection. except in the case of filling
Antioxidant small amount in formula To help add stability to the sunscreen formula. and protect the skin from oxidation from sunlight more