High-Potency Serum

High-Potency Serum is an oil-free, lightweight liquid containing the full complement of the Cellex-C signature ingredients — pure L-ascorbic acid (vitamin C), tyrosine and zinc sulphate.

The serum works synergistically to encourage a firm, youthful, elastic quality in the skin.

Suitable for all, except extremely sensitive skin.

30 mL / 1 Fl. Oz.




Great results and zero nasties
The ONLY time in my life I was ever told my skin looked great (zero make-up) was when my AM routine was the High-Potency Serum and Hydra 5 B-Complex. I am a bit lazy, so I actually put my drops from both onto my palm and applied at the same time. Probably not recommended but I still got the results. Over the years I have tried many other C serums but all of them I hated — almost all had glycerin in them (ugh. Hate the texture and feel) and/or other nasties like propolyne glycol. Always come back to Cellex-C. I just wish it was easier to get hold of in Japan.

JK, Japan. 5/29/2021

This is an amazing product that truly lives up to the claims. I have been using the Cellex-C High-Potency Serum with the Hydra 5 B-Complex for over 20 years and unreservedly declare that it's the best product I've ever used. My skin looks much younger than my years suggest, as I am constantly told. Even my GP marvels at my skin! I won't waste my time and money on anything else.

Deb W., New Zealand. 6/17/2019

I've been using Cellex-C High-Potency Serum paired with the Hydra 5 B-Complex and it's amazing how my skin has improved! Not going to stop using this ever! I also purchased the eye cream GLA and Seline E cream as a rich night time mousturiser... I love the skin I'm in... Thank you Cellex C!

Runa A., Liverpool, UK. 11/5/2018

I began using your products in the early 90s. My mother who was in the skincare business recommended the product...Best advice I ever took from my mother. I incorporate a three step routine daily. Cellex-C Serum, Hydra 5 B-Complex and Seline-E (sometimes alternating with GLA). I can without the slightest hesitation state this product lives up to it's claims 100%. I am 61 yrs old and have the skin of someone in there early to mid forties. No one to this day outside of my immediate family has ever come close to guessing my actual chronological age. Most laugh with disbelief when I tell them my real age.

Peter W. 6/13/2017

SkinCeuticals vs Cellex-C
Cellex-C give actual results get rid of fine wrinkles while evening out T-zones with dry areas. I've used it for over 15 years and had the chance to try its competitors. Cellex-C High Potency and Hydra B Complex together works wonders. It's really the best there is.

Leila K. 1/3/2017

Bagus banget!

Titien L. 11/30/2016

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Joomee Song, Joomee Song Inc.

While Song’s extensive A-list clientele is mostly comprised of Hollywood elites, her intense dermal training hails from the most advanced and highly regarded skin philosophies. Her decades of skin experience in Asia have provided her unmatched skills to execute and educate a long list of famed cover, runway, and red carpet fixtures across the globe.

What is the most important piece of summer skincare advice you impart upon your clients?

When you have sun damage, the key is to treat it right away—ideally, on the same day. Vitamin C L-ascorbic acid is the ingredient to help with the inflammation after sun damage, so you can combat it before the brown spots start to appear. It works by blocking the production of pigment, and it has anti-inflammatory benefits to soothe the skin. My go-to is Cellex-C High-Potency Serum or Cellex-C Serum for Sensitive Skin. Cellex-C pioneered topical vitamin C and started the trend, which many pharmaceutical skincare companies have since adopted.

W Magazine

Featured in Beauty Report — The Ultimate Beauty Product Shopping Resource.


Best Anti-Aging Serums
Why it's great: Users say this anti-aging serum is 'worth every penny,' as it leaves skin 'looking even-toned and feeling as soft as a baby's bottom.' Reviewers say it also 'resolved acne and took away fine lines and wrinkles' and didn't leave skin feeling oily. 'I highly recommend it for anyone with oily skin and/or acne,' says one user. 'It's amazing!'


Try to save your skin — Topical vitamin C treatments are all the rage among facialists and dermatologists, and they’re even popping up at cosmetic counters. The trend can be traced back to the now classic Cellex-C Serum, which has debuted in 1994 and whose cult status has triggered a swarm of mimics.