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Please ask for the formula for making Cleansing Lotion.

Refer to the website of Retinal (Retinaldehyde) Product characteristics: Yellow-orange powder. Quality deteriorates quickly when exposed to UV light, but why does it come to hair color? น้ำตาลเข้ม (colored like tamarind pulp) and very sticky, not powdered. Is the quality deteriorating or is it stil...

Ask more from point 1. Activated Resorcinol™ Can be used with Acid ( Liquid Azelaic™ ) or not?

Please inquire as follows: 1. Activated Resorcinol™ can be used in conjunction with Tranexamic Acid and 4MSK (Potassium Methoxysalicylate) ? 2. 4MSK (Potassium Methoxysalicylate) is it still patented?

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I followed the suggestion, leading Melatonin 1% dissolve in Ethoxydiglycol 3% is soluble. But when I put 96% of water, it settles down. I don't know if there is any way to make a clear solution or not แอลกอฮอลล์

Pure-Melatonin e™ (not compatible with Zinc PCA ) and then can be compatible with Methylsulfonylmethane (Pure MSM™) ?