Tiam My Signature C Source Vitamin C Serum

Full name: My Signature C Source

Amount: 30ml

Ingredients: (No changes from the original C20 product)

Water, Ascorbic Acid, Alcohol, Sodium Lactate, Butylene Glycol, Glucose, PEG-60 Hydrogenated Castor Oil, 1,2-Hexanediol, Phenoxyethanol, Sodium Hyaluronate, Bis-PEG-18 Methyl Ether Dimethyl Silane, Xanthan Gum, Diethoxyethyl Succinate, Ammonium Acryloyldimethyltaurate/VP Copolymer, Carthamus Tinctorius (Safflower) Flower Extract, Citrus Aurantium Dulcis (Orange) Peel Oil, Glycerin, Zinc PCA, Panthenol, Niacinamide, t-Butyl Alcohol, Camellia Sinensis Leaf Extract, Beta-Glucan, Tocopheryl Acetate, Lecithin, Caprylic/Capric Triglyceride, Ubiquinone, Diisopropyl Adipate

So with 20% Ascorbic Acid, it contains about the highest concentration of Vitamin C you can buy, which is great! Next is alcohol. Now personally, I don’t have a problem with alcohol in certain formulas, and I’m okay with it in this, but of course it’s a personal choice. There’s also a few other ingredients I’m happy to see- sodium hyaluronate and camellia sinensis leaf extract in particular, for moisturizing and antioxidant properties.

Niacinamide is featured here, which is really quite confusing, considering its widely thought that using niacinamide and Vitamin C together could be problematic. There has been some discussion on this, and I don’t pretend to know the science behind it. Luckily we have highly knowledgeable bloggers like Stephen at kindofstephen.com to help us non-science-minded folks understand the science behind what we’re putting our faces. His article about Vitamin C and niacinamide really helped me, and I’ve decided to allow a short wait time between using the serum, and any niacinamide product (virtually all of my products contain niacinamide). I’m not too concerned about using them together, nor the small (?) amount of niacinamide in this product.

How to use: You have to be quite particular with how you use and store Vitamin C, and I’ll admit I felt a bit nervous initially. Vitamin C can oxidize very quickly, and should therefore be stored in a cool, dark place. I keep mine in the refrigerator, in its box. It does come in a dark glass bottle to help protect the product.