“If you have sensitive skin beware this serum maybe too strong for you. I introduced the serum just a couple of days a week to start with then slowly built it up to every morning only using two drops of the serum, every thing seemed fine but after a few weeks my skin started to burn with red sore patches. I also had done the same routine with the lowest dose Retinol serum at the same time maybe too much. I stopped using both the serums and after a couple of days my skin settled down with the help from the Ectoin barrier build milk. I decided to try applying the vitamin C serum only but my skin reacted again and now I have had to stop using most of my Facetheory products except the Ectoin because they contain vitamin C until my skin calms down again. In future I will ask for advice from Facetheory about adding any of there products to my routine.”

Helpful Report

Posted 4 months ago

Hi Sara, I’m sorry to hear your skin reacted. It sounds like the combination and dosing may have been too strong for you. Stopping the serums and giving your skin time to settle was a sensible step. If you reintroduce vitamin C or retinol later, a very gradual patch test and starting at a lower frequency/concentration is advised, and you might want to avoid using both at the same time. If you’d like, we can share guidance on alternatives or assist you with support. Thanks for letting us know and for helping us improve. Thanks Facetheory Team

Posted 4 months ago

“I'm just finishing my first bottle of this, in addition to a daily SPF, moisturiser and retinal. I went for a facial last week and was told she wasn't sure what to do for me as my skin is excellent! Highly recommended”

1 Helpful Report

Posted 4 months ago

Hi Louise, So great to hear Glow-C Vitamin C 20% Serum fits so well with your routine and that your skin is looking excellent lovely feedback. If you have any questions about maintaining results or layering with your SPF, moisturiser, and retinal, we’re here to help. Thanks, Facetheory Team

Posted 4 months ago

Anonyme

Verified Reviewer

Incentivized

“Indispensable”

Helpful Report

Posted 4 months ago

Hi there, Hi there, Thank you so much for your wonderful review and for calling the Glow‑C Vitamin C 20% Serum “indispensable” — we’re absolutely thrilled to hear that it’s become such an essential part of your routine. Thanks, Team Facetheory

Posted 4 months ago

“No reaction if I use it on and off but when I started using it consistently after a week my skin started burning, got red patches, itchy so I had to stop. I tried to start again after it calmed down but the same thing happened. First time I’ve experienced this. Not even retinol does this to my skin. It’s such a pity as once off it really does give a glow.”

Helpful Report

Posted 5 months ago

Hi Yvette, We’re really sorry to hear about the burning, redness, and itching you experienced after using Glow-C Vitamin C 20% Serum consistently. That’s not the reaction we’d want for you, and we understand how disappointing this is since it can give that glow when it works for others. Please discontinue use and, if you can, patch test a small area before trying any new product. If you’d like, we can review alternative vitamin C formulations with a lower concentration or different texture that might be gentler on your skin. If the irritation persists or you’d like personalized guidance, please reach out to our support team with (an approximate date of use and any other products used that day) so we can assist promptly. Thank you for sharing your experience—your feedback helps us improve. Thanks, Facetheory Team

Posted 4 months ago

Author didn't leave any comments.

Helpful Report

Posted 5 months ago

Hi there, Thank you for the fantastic 5-star review! We’re thrilled you’re enjoying the Glow-C Vitamin C 20% Serum. If you have any questions or need skincare tips, we’re here to help. Thanks, Team Facetheory

Posted 4 months ago

“Good serum, but a little sticky”

Helpful Report

Posted 5 months ago

Hi there, Thank you for the review! We’re glad you like the Glow-C Vitamin C 20% Serum. If you find it a little sticky, try using a thinner layer and allowing it to fully absorb before applying other products. Thanks Team Facetheory

Posted 5 months ago

“Love this serum. Have tried many others and this is the best for evening out skin tone and I love that it’s slightly oily as I have dry skin.”

2 Helpful Report

Posted 6 months ago

Hi Lucy, Thank you for sharing your experience! We’re glad to hear Glow-C 20% Serum is helping even out your complexion and that its slightly oily texture works well for your dry skin. If you’d like, we can suggest a simple routine to maximize results or discuss adjusting frequency as your skin changes. Thanks Team Facetheory Kind regards, Team Facetheory

Posted 6 months ago

Author didn't leave any comments.

Helpful Report

Posted 6 months ago

Dear Babette, Thank you for sharing your experience with the Glow-C Vitamin C 20% Serum. We’re thrilled to hear it’s delivering great results. For best results, apply a small pea sized amount to clean skin in the morning, follow with moisturizer and SPF, and avoid using with other strong actives at the same time. If you have questions or want routine tweaks, we’re here to help. Thanks Facetheory Team

Posted 6 months ago

Glow-C Vitamin C 20% Serum Reviews