- #Skincareaddiction timeless vitamin c serum how to#
- #Skincareaddiction timeless vitamin c serum skin#
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Additionally, if you use deionized or distilled water instead of tap, you'll be able to slow down the oxidation process since metal ions in your water can speed up how quickly L-ascorbic acid decomposes. Adding additional ingredients and/or manipulating the structure of L-ascorbic acid in an effort to stabilize and make your serums last longer would be a hassle for most people, so for a DIY solution it's best to make small batches each time and re-make your serums frequently. It isn’t as potent as the pure stuff, but it’s a lot more stable. You can stabilize L-ascorbic acid by combining it with other ingredients, which a lot of companies, like Skinceuticals, do by usually combining it with vitamin E and ferulic acid, or by changing it's structure and making it a derivative that converts back into L-ascorbic acid once on your skin. For example, a 3.5ph vitamin c solution stored in an opaque amber/dark glass bottle at 77 degrees will oxidize by 50% in about 9 days. When L-ascorbic acid is in a water based product, it decompose really easily and turns into DHAA (dehydroascorbic acid), but doesn't turn immediately. Pure vitamin C is L-ascorbic acid and when it’s in powder form, it’s relatively stable.
That way I’ll always know how fresh it is and can make a new batch once it starts to oxidize. Because of this, I’ve actually started making my own DIY vitamin C serums and stopped buying them.
#Skincareaddiction timeless vitamin c serum skin#
Vitamin C has so many benefits for the skin but getting it into our skin is the problem since it’s highly unstable and can oxidize rapidly when exposed to light and air, so who knows how much your vitamin C serum has degraded by the time you purchase and are actually able to use it. They’ve got tons of studies to back up it’s effectiveness but from what I’ve heard from a dermatologist, there likely aren’t very many dupes out there even though there are so many vitamin C serums on the market that are identical in ingredients, but it really all comes down to formulation. Skinceuticals’ Vitamin C E Ferulic serum is probably the gold standard when it comes to vitamin C serums but man is it expensive.
I’ve had my bottle for two months and the serum is still completely clear.ĭrunk Elephant C Firma is sold at Sephora but I wouldn’t recommend it because you don’t know how long it’s been sitting on the shelf before you buy it. Guaranteed fresh for 3 months, comes in an airless pump. Order directly from the Timeless site - free shipping and (most importantly IMO) it’s made to order, so it will arrive fresh.
#Skincareaddiction timeless vitamin c serum code#
Sign up for emails for 20% off or use code “hf5off” for $5 off. I recently bought my first bottle after combing through lots of recommendations in this sub. I’d recommend Timeless Vit C 20% + E + Ferulic. Skinceuticals’ formula is patent-protected, but there are a few quite similar dupes. Generally you can tell that a Vit C product has started to oxidize if you notice it turning from a clear/pale yellow to yellow/brown. However, water-based LAA formulations are also quite unstable and oxidize relatively quickly (3-6 months), rendering the Vit C useless at best after that point. Skinceuticals uses the most potent and research-backed form of Vit C, L-Ascorbic Acid. Posts without a valid tag will be removed by Automoderator.
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