Hyaluronic and ferulic acids: useful, or waste of money & resources?
2014年12月16日 · With Hyaluronic Acid, you’re good with 0.2% to 0.3%, but you can add as much as you like. It’s a pricey ingredient, on the order of $0.50 per gram. There were some nice NIH studies that showed good effects at 0.2%. Note that there are two different molecular weights of Hyaluronic Acid, regular and super low molecular weight.
Ferulic acid solvation troubles - Chemists Corner
2017年5月11日 · phase 2: Dissolve 5% niacinamide3% panthenol2% N-acetyl-glucosamine in the rest of the water. Add to phase 1 = phase 3. phase 3: Add 1% hyaluronic acid (high molecular weight) to the mixture.Mix and let hydrate for a few hours. phase 4: Add 0,5 tocopherol to 3% polysorbate 80. Add to phase 3. Add 0,7% Cosgard (benzyl alcohol and dehydroacetic acid)
Brightening serum with NAG, MAP, Arbutin changes colour
2018年8月10日 · May I kindly ask you to comment on whether the change of colour signalises about an oxidation or it is safe to use? Thank you very much in advance. Original formula: Aqua - 78%. Vitamin C (magnesium ascorbyl phosphate) - 2%. Alpha-Arbutin - 2%. N-Acetyl Glucosamine - 3%. Hyaluronic Acid SLMW - 0.5%. Niacinamide - 6%.
Struggling to get ascorbic acid to dissolve in C/E/ferulic acid …
September 26, 2023 at 2:49 am. They claimed that ascorbic acid can dissolve in propylene glycol at up to 17% (uh, citation needed…). It’s true, I’ve seen some patent stating that. The solubility in propylene glycol can increase in presence of Urea. how on earth are you all (and the brains behind the patented C/E/F formula) managing to ...
Hyaluronic Acid vs Sodium Hyaluronate - Chemists Corner
2015年6月18日 · @MarkBroussard, @pma “Injectable fillers use hyaluronic acid to hydrate and separate the skin, holding onto water and supporting all that makes the face plump and voluptuous. Hyaluronic acid cannot be absorbed when applied topically, which is why sodium hyaluronate is around.”
Solubilizing tocopherol and ferulic acid - Chemists Corner
2021年3月13日 · Microformulation. Tocopherol is not water soluble (although there are some forms altered to be so, but rarely used due to issues with PEG’s. Solubulization is a huge topic which you will gain a great deal of benefit from studying formally. For example, the Gold standard is polysorbates.
Can this ingredient list be correct? - Vitamin C serum
2018年12月28日 · I am currently a cosmetic chemist student and wondering more and more if some ingredient lists are chemically feasible. For example, this one is claimed to be a 23% Vitamin C serum: Water, L-Ascorbic Acid, Alkyl Benzoate, Panthenol-D, Carbomer, Ferulic Acid, Sclerotium Gum, Optiphen, Hyaluronic acid. As far as I understand, everything is water ...
Please help to fix my Ferulic Acid + Ethyl Ascorbic Acid serum
2022年5月3日 · PALMAROSA EO0,3. LAVENDER EO0,2. OATMEAL EXTRACT0,5. TOCOPHEROL 0,5. My method is: Prepare phases - Add Phase B to Phase A, add C to A+B, heat A+B+C and D separetly to 80C, homogenise for 4-6 mins in high shear- low shear when cool down, below 40 add phase E and mix. Adjust the pH 4,5-5,00.
What are the best ingredients for aging skin - Chemists Corner
2022年3月10日 · ingredients are fine and you don’t need all or as many. Select a compatible carrier oil. The delivery system is just as important as the ingredients. Also ensure that acid based ingredients are incorporated into an acid based environment and select a …
Ethoxydiglycol: Why is it used in Vitamin C serums?
Posted byZinkon August 26, 2016 at 8:40 pm. I’ve seen a lot of L-Ascorbic Acid based Vitamin C serums use extreme amounts of Ethoxydiglycol, ranging from 50 to 10%. At pH < 3 Vitamin C shouldn’t have any issue penetrating the skin, so I don’t quite understand the reasoning. It also doesn’t eliminate the “stickiness” that high ...