I have used two bottles of the pixi Vitamin C version, and sadly both did oxidize within six weeks despite me very diligently keeping the bottle in the fridge and in the dark.

This formula uses a low pH and extra antioxidants to help to stabilize Vitamin C, but even like this, C-Glow comes with a relatively short, 6 months shelf-life. Compared to other products that is about average, but even with daily use means I have to discard around one third of the bottle every time, which feels wasteful. If going to the fridge every day for your C-Glow does not sound comfortable, we recommend to use this 10 ml mini bottle. The kit also includes an empty C-Glow mini-bottle, useful to decant a smaller amount of C-Glow, and keeping it comfortably in the bathroom. The 103 third parties who use cookies on this service do so for their purposes of displaying and measuring personalized ads, generating audience insights, and developing and improving products.

One of the greatest, masterly formulations to date, the 15% L-Ascorbic Acid + Vitamin E + Ferulic Acid combination has more than enough evidence in proofing its magical power in visibly transforming and invigorating skin brightness, smoothness and overall youthfulness.

The serum also counteracts hyperpigmentation, so your dark spots and circles will become less visible! The texture is very watery and I do not notice a particular scent, although my sister claims her hands smell a little “funky” after application. Ascorbic Acid in this concentration can be irritating no matter how well it is fomulated, so if your skin is very sensitive, it might not be for you. C-Glow is our 15% Vitamin C Serum with a water-light texture, known to give an instant glow, even the skin and boost collagen production with long term use.

They are good friends because ethylhexylglycerin can boost the effectiveness of phenoxyethanol (and other preservatives) and as an added bonus it feels nice on the skin too.

It is great for smokers as it gives the skin a bit more protection from the carcinogens (but you know smoking is bad, so we won't remind you), its great for uneven skin tone, acne scars, pigmentation, skin barrier repair and best of all.The Inkey Lists version is different both in texture – it is a silicone lotion, which keeps it stable – and in concentration, as it uses 20%. For each kit, you will also find a routine template in the how to use section helping you to fit all products into your routine easily.

Dimethyl Isosorbide – A new-generation solvent that aids the proper penetration of Vitamin C + solubilizes the high amount of Ferulic Acid into the formula. La única pega que le pondría es que hay que conservarla con mucho cuidado porque se oxida con relativa facilidad, pero bueno, eso pasa con muchisimas y de marcas mucho mas caras tambien. This formula uses a low pH and extra antioxidants to help to stabilize Vitamin C, but even like this, C-Glow comes only with a couple of months shelf-life.

You can usually find it right in the very first spot of the ingredient list, meaning it’s the biggest thing out of all the stuff that makes up the product. Against common belief it can be paired with most other substances ( I talk more about that here), so whatever fits your routine best. I prefer to use my Vitamin C serums in the mornings, to get the most out of the antioxidant effects, but using it at night is of course possible as well. With consistent use over a few months, my skin has an even appearance and stays hydrated through the day when I apply this in the morning under my sunscreen.