Pure Vitamin C10 Serum.

"This product costs £45. This did not do very well. The negatives are that it's got 12% ascorbic acid. This is a worst for skin of color. The fourth ingredient in here is denatured alcohol. That's why you're getting very quick dry feel. This is a problem. Denatured alcohol leads to premature aging and because it generates free radicals in the skin, the exact opposite of what the vitamin C is trying to do. So, this is ridiculous. They also add in fragrance and that's what that beautiful smell is. If something's smelling lovely, it's a problem for our skin because don't forget 3 to 4% of the population gets contact dermatitis from fragrance. And for skin of color that can lead to hyperpigmentation. So for me, this product is a disaster."

"they've got the wrong packaging this is not a stable product it's such a shame and it's been recommended by virtually every doctor online every influencer online. I really detest this brand they get so much wrong."

"The vitamin C which has colorant to disguise the fact it often comes oxidized. As a brand that always prided itself on being sensitive skin friendly, I really wouldn't expect to see colorant, drying alcohol, and other potential irritants in their products. This is a huge shift away from the original ethos of La Roche-Posay, and this is clearly driven by the L'Oreal group."

"Their serums collectively are hands down some of the worst formulated in the industry. I think one of their worst serums though is their vitamin C specifically because they added color to it recently. This is a bit of a shady move because lots of people online were complaining that the product was coming oxidized. Vitamin C needs to be fresh. It oxidizes quickly. When it oxidizes, it turns like a yellowy orangey brownish color and it's much less effective. You don't want to be using oxidized vitamin C because it just won't deliver for you. Brands obviously can't hide the fact it's oxidized because it turns that yellowy brownish color. So what do they do? They stick colorant in it and that way we can't tell. If your vitamin C is colored, it has added colorant into it. Move on."

"It's got they've tried really hard here with these active ingredients, I think it's pretty cool with the thermal water as well, but just the addition of the denatured alcohol to make sure that it sits on shelf properly and for a longer period of time without ruining and also paging, and the packaging is not so good and the perfume. If you're going to partially inactivate the vitamin C you lose probably what makes it effective. You can get 10% or 15% vitamin C from The Ordinary and The Inky List, and The Inky List is better than this."

"The packaging is not so good and the perfume. You can get 10% or 15% vitamin C from The Ordinary and Inky List. I just feel that if you're going to partially inactivate the vitamin C you lose probably what the benefit is. You can get 10% vitamin C and EGF from the Inky List which is better than this."

"I always like precursors of vitamin C because vitamin C is very unstable by nature, so if you're going to put that on the surface of the skin you want it to be converted in. Precursors are really good, or even derivatives are sometimes good as well. But the packaging is not ideal for a vitamin C product. Air is getting into this, it's not the best. I want air pumps. This has already started leaking. Light will penetrate there as well. You lose that efficacy, which is really disappointing. It's a hybrid serum cream, which is very fragrant and has a citrusy feel, but in my opinion you're either a serum or you're a cream. If you have a hybrid, you cancel out the benefits. Sometimes you want to wear a vitamin C and then put a moisturizer on top, and you're denying people that option. It's very silicone to me. You've got ascorbic acid at a very high concentration, glycerin which is great, but then you've got denat alcohol, which is a big no-no nowadays. There's no excuse for that to be so high up."

"You lose that efficacy which is really disappointing. It's another hybrid, very fragrant hybrid serum cream. My feeling is that if you're a serum or you're a cream, and we understand the principle behind having hybrids, you get that spread but you again cancel out the benefits. Sometimes you want to wear a vitamin C and then put a moisturizer on top and you're denying people that. It's very silicone to me. You've got ascorbic acid at a very high concentration, there's glycerin which is great, then you've got denat alcohol which is a big no-no nowadays. There's no excuse for that to be so high up. Silicone, like I said, I think there's a lot of silicone in these products and if you layer them up it can be comedogenic. I know it's not listed as a comedogenic agent but it is, and also it's terrible for the environment. You've got the salicylic acid, which combination of salicylic acid and vitamin C is nice because exfoliating allows the vitamin C to penetrate nicely, and there's some good peptides in there. So they've tried really hard here with these active ingredients, I think it's pretty cool. But the hybrid formula and the silicone content are disappointing."