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Glycolic Acid (AHA) 100% Powder requires concentration of AHA 5 % when product quantity is required AHA 100 gram, therefore use powder AHA 5g mixed with 95g water, right? Thanks in advance.

Combination skin - oily, sensitive, acne prone, large pores, what you need from a cleansing gel is to gently cleanse your skin. does not cause acne Ask which recipe to mix. Thank you in advance

Skin type : Combination to oily as สิวอุดตัน large pores, sensitive, want to make sunscreen. By choosing the following ingredients Avobenzone 5% Octisalate 5% Octocrylene 10% Light Cream Maker™ 2% water 78% Mixture is Mix Avobenzone 5% Octisalate 5% and Octocrylene 10% with thermal assist When the i...

make meat serum Warp Cream Maker 5% mix Cyclomethicone / Cyclopentasiloxane (Low-Odor) 45% The questions are as follows: - Using manual methods, not using machines Can this be done? If not, what should I do? -Does it need heat to mix? -1% is equal to 1g. or not? If not, how to do it or calculate it?...