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Please ask further questions. in case of thawing L-ascorbic acid with Butylene Glycol and still have crystals of the body. วิตซี is present. There is a recommended method to dissolve so that no crystals remain. วิตซี or should I switch to solvent? วิตซี with 1,2-Hexanediol at 5%, but the formula con...

Thank you for your answers and advice

trouble with solving L-ascorbic acid (Ultra-Fine) if dissolved in water. will be able to do it or not (should or shouldn't) or should be dissolved in the best way to maintain the effectiveness of the substance When applied it doesn't feel heavy on the skin. Active Ingredient - Sodium Hyaluronate aci...

Feel free to ask me how the following formula will affect my skin? Active Portion added in the formula Sodium Hyaluronate Solution = 25% Vitamim C ( L-ascorbic acid ) = 15% Argireline C (PD010) = 3% Vitamin E - Acetate Care= 0.1% Ferulic Acid = 0.1% Tego Cosmo C250 = 1% Lactil = 0.15% **Dissolve in ...

I'm confused. Thank you very much for the information ^^

Pure PPM Value Vitamin C (L-ascorbic acid) calculated from where, for example Pure Vitamin C 30,000 PPM Usually the PPM value claimed by some brands. What is it used to indicate? Thanks in advance for the answer.

Please ask if you want to dissolve in Glycols, don't know if there is a recommendation for Glycols type, which type to choose and วิตซี L-ascorbic acid between Fine and Ultra-Fine, what is the difference? If you want to produce it as Pure Vitamin C Serum. Please suggest other substances. that should...

Thanks for the advice ^^

Shows that I should consider Stabilizer techniques including day/month/year. in storage together Usually, which technique of Stabilizer gives the lightest serum texture? Thanks for the good advice :)

I don't know if this Active substance can be mixed together or not because the Ph values between AsA and MAP are different ( Vitamin C +Hya +Peptide Serum) or should I increase AsA to 15% and cut off the MAP, is it good or not? I want to get the best results for white skin and reduce wrinkles. Befor...