- Azelaic Acid
- Anua - Azelaic Acid 10 Hyaluron Redness Soothing Serum(30ml)
Anua - Azelaic Acid 10 Hyaluron Redness Soothing Serum(30ml)
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SKINZA10
About Product
Is your skin constantly red, reactive, and congested — and every active product you try to fix it only makes the redness worse?
Sensitive and acne-prone skin faces a cruel paradox: the ingredients that most effectively clear congestion, fade dark spots, and smooth texture — acids, retinoids, Vitamin C — are also the most likely to trigger the inflammation and redness that sensitive skin is already struggling to manage. The result is a skin type that either tolerates actives and pays the price in irritation, or avoids actives entirely and accepts that breakouts, dark marks, and uneven texture will persist.
Azelaic Acid is the ingredient that breaks this cycle. Clinically active against pigmentation, congestion, and texture — and simultaneously one of the most anti-inflammatory and soothing actives in dermatology. And this formula, built around 10% Azelaic Acid and ANUA's Gentle Calming Complex™, is the most comfortable delivery of that concentration available.
ANUA Azelaic Acid 10% + Hyaluron Redness Soothing Serum The Serum That Treats and Soothes at the Same Time.
A lightweight, watery serum formulated with 10% Azelaic Acid from wheat and barley, ANUA's proprietary Gentle Calming Complex™ of Blue Tansy Oil, Ubiquinone, Green Tea Leaf Water, Aloe Leaf Juice, and seven types of Centella Asiatica, three types of Hyaluronic Acid, Betaine Salicylate, Niacinamide, Zinc PCA, Beta-Glucan, Ceramide NP, and Squalane — this serum delivers clinically meaningful active treatment for redness, congestion, hyperpigmentation, and texture in a formula gentle enough for sensitive and rosacea-adjacent skin, buildable from twice weekly to daily use, and free from fragrance, artificial colour, denatured alcohols, silicones, sulphates, parabens, and animal oils.
Its naturally derived green tint, from Blue Tansy, is not cosmetic. It is the visual evidence of the botanical soothing complex at work.
How To Use
Step 1 — Cleanse and Tone
Apply after cleansing and toning, between your toner and moisturiser steps.
Step 2 — Start with 1–2 Drops
Begin with 1–2 drops per application. The watery formula distributes easily — a small amount covers the full face. Increase to up to 5 drops per application as skin tolerance builds.
Step 3 — Pat Gently into the Skin
Apply drops to the fingertips and gently pat across the face, focusing on areas of redness, congestion, and dark marks. Allow to absorb fully before the next step.
Step 4 — Follow with Moisturiser
Apply moisturiser to seal in the serum and provide additional barrier support — particularly important during the initial weeks of use when the skin is adjusting to 10% Azelaic Acid.
Step 5 — Build Frequency Gradually
Begin 1–2 times per week. Increase gradually over 2–4 weeks based on skin response, building toward daily AM and PM use. This gradual introduction is the single most effective strategy for avoiding adjustment-period sensitivity.
Step 6 — Always Apply SPF in the Morning
Azelaic Acid increases photosensitivity during cellular turnover — daily SPF 30 or greater is essential when using this serum in the morning routine.
Key Benefits
Azelaic Acid — The Rare Active That Treats and Soothes Simultaneously
Every other effective exfoliating and brightening active — AHAs, BHAs, retinoids, Vitamin C — has the potential to aggravate sensitive and reactive skin. Azelaic Acid is the exception: its anti-inflammatory mechanism means that as it clears congestion, fades dark spots, and smooths texture, it is simultaneously reducing the inflammation and redness that sensitive skin is fighting. For UK skin that is already reactive from environmental pollution, hard water, and central heating — this is not a compromise active. It is the right active.
Gentle Calming Complex™ — Blue Tansy + 7 Types of Cica
The combination of Blue Tansy Oil, Ubiquinone, Green Tea, Aloe, and the full spectrum of Centella Asiatica bioactive compounds creates one of the most comprehensive soothing complexes in K-Beauty. The natural green colour is the functional evidence of this complex — not a dye, not a marketing choice, but the genuine botanical colour of Blue Tansy and Cica at meaningful concentrations. It is the visual promise that these ingredients are present at levels that work.
Three Hydration Systems — Hyaluronic Acid + Biosaccharide Gum-1 + Squalane
The formula addresses hydration across three different mechanisms: HA and Biosaccharide Gum-1 drawing and retaining water from the environment and deeper skin layers; Squalane forming a lightweight lipid seal that prevents moisture from escaping. The result is a genuinely hydrating treatment serum — not one that dehydrates the skin while it treats.
Buildable from Twice Weekly to Twice Daily
Starting at 1–2 times per week and gradually building to daily AM and PM use gives the skin time to acclimate to 10% Azelaic Acid without the adjustment-period irritation that can occur when introduced too quickly. The formula's built-in soothing complex makes this build significantly more comfortable than conventional Azelaic Acid products — many users reach daily use within 2–3 weeks without any irritation period.
Non-Comedogenic Tested — Safe for Acne-Prone Skin
The non-comedogenic certification means this serum will not clog pores or contribute to the congestion it is working to clear — essential credibility for a serum marketed to acne-prone skin, and not something every treatment serum can claim.
Fragrance-Free and Free from 7 Irritants
Complete absence of artificial fragrance, denatured alcohols, artificial colour, oils, silicones, sulphates, and parabens makes this one of the cleanest treatment serums in the ANUA range. For UK skin dealing with reactive sensitivity, the elimination of fragrance in particular significantly reduces the risk of a reactive response to a new active product.
Skin Type
All skin types. Especially suitable for sensitive, reactive, redness-prone, and acne-prone skin.
Ingredients
Water, Azelaic Acid, Propylene Glycol, Sodium Hydroxide, Dipropylene Glycol, 1,2-Hexanediol, Panthenol, Hydroxyethylcellulose, Betaine Salicylate, Glycerin, Biosaccharide Gum-1, Ethylhexylglycerin, Allantoin, Dipotassium Glycyrrhizate, Melia Azadirachta Leaf Extract, Camellia Sinensis Leaf Water, Sodium Hyaluronate, Melia Azadirachta Flower Extract, Niacinamide, Aloe Barbadensis Leaf Juice, Beta-Glucan, Centella Asiatica Extract, Centella Asiatica Leaf Extract, Centella Asiatica Root Extract, Madecassoside, Asiaticoside, Asiatic Acid, Madecassic Acid, Squalane, Zinc PCA, Butylene Glycol, Pentylene Glycol, Caprylyl/Capryl Glucoside, Hydrogenated Lecithin, Ceramide NP
FAQ'S
Q: Why is this serum green?
A: The natural green colour comes from Blue Tansy Oil in the Gentle Calming Complex™ — no artificial dyes.
Q: Is 10% Azelaic Acid safe for sensitive skin?
A: Yes — Azelaic Acid is anti-inflammatory, making it one of the most sensitive-skin-appropriate actives available.
Q: Can I use this on rosacea-prone skin?
A: It is suitable for rosacea-adjacent sensitivity; those with diagnosed rosacea should consult a GP or dermatologist first.
Q: How is Azelaic Acid different from AHA or BHA?
A: Unlike AHAs and BHAs, Azelaic Acid reduces inflammation rather than potentially increasing it — making it tolerable for reactive skin.
Q: Can I use this with the ANUA Niacinamide + TXA serum?
A: Yes — use on alternate evenings for comprehensive brightening without overloading the skin with actives.
Q: Can I use this with retinol?
A: Not on the same night — use Azelaic Acid and retinol on alternate evenings.
Q: Is this fragrance-free?
A: Yes — completely free from artificial fragrance and artificial colour.
Q: Can I use this while pregnant or breastfeeding?
A: Consult your GP or midwife first — Azelaic Acid is generally considered lower-risk but professional guidance is recommended.
Q: How quickly will redness reduce?
A: Clinically proven to immediately (temporarily) calm redness after application; sustained reduction builds within 4 weeks.
Q: Where does this go in my routine?
A: Between toner and moisturiser — AM and PM.
- 5 stars: 19 (90%)
- 4 stars: 2 (10%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 star: 0 (0%)
Best acid serum for sensitive skin full stop. Redness reduced, dark spots fading and skin glowing. Love it.
I have mixed race skin and finding actives that work evenly on my pigmentation without irritation has always been a challenge. This serum has been completely faultless. The azelaic acid is working consistently on my hyperpigmentation and the formula hasn't caused any uneven reactions or sensitivity. My skin tone is the most even it has ever been and the natural glow I have now is something I've never had before. This serum is genuinely extraordinary for deeper skin tones.
I have eczema-prone skin and was extremely cautious trying a new active. The ANUA formula has been completely gentle and has not triggered a single flare. The soothing complex is genuinely remarkable and the azelaic acid is working quietly and consistently on my uneven skin tone and post-flare marks. My skin barrier feels stronger and more resilient since starting this routine and my overall complexion looks so much healthier. Genuinely the best active for eczema-adjacent sensitive skin.
As someone with both sensitive skin and persistent hyperpigmentation I always felt like I had to choose between treating my pigmentation and protecting my skin's reactivity. This serum has completely removed that dilemma. The 10% azelaic acid is working consistently on my dark spots while the calming complex means my skin hasn't reacted once. My complexion is the most even and clear it has ever been. I tell everyone with reactive or pigmentation-prone skin about this product.
I bought this sceptically because the green colour is quite alarming on first sight. One week later I was completely converted. The serum absorbs instantly, leaves no residue and the calming effect on my redness is immediate and visible. I've been using it for two months now and my skin tone has completely transformed, evenness, clarity and glow that I have never had before. The hyaluronic acid keeps everything hydrated throughout the treatment. Best serum purchase I've made.
I'm 35 and have been dealing with adult acne, post-acne marks and redness simultaneously for years. This serum addresses all three concerns in one product which has simplified my routine dramatically. The azelaic acid clears congestion and fades marks while the blue tansy and centella calm the redness and inflammation. Six weeks of consistent use and my skin is genuinely transformed. My friends keep asking what I've changed and the answer is just this one serum. Extraordinary.
I was dealing with stubborn PIH from hormonal breakouts that nothing seemed to shift. My dermatologist actually recommended azelaic acid and this formula specifically for its soothing complex. Four weeks in and the difference is genuinely remarkable — my dark marks have faded significantly and the redness that always accompanied my breakouts has calmed right down. The hyaluronic acid keeps my skin comfortable throughout which I didn't expect from a treatment serum. Worth every single penny.
Even skin tone, reduced redness and clearer complexion after just one month. Absolutely brilliant serum from ANUA.
Scottish skin gets so reactive in winter and this serum has been an absolute revelation. The azelaic acid clears my congestion and treats my dark marks while the calming complex keeps the winter redness at bay. My skin barrier feels so much stronger since starting this and I have had zero flare-ups despite using a 10% acid. I started twice weekly and built to daily use over three weeks without any issues at all. Best active serum I have ever found for reactive skin.
have very reactive sensitive skin that flares up at almost everything. This serum is the first active I have ever been able to use consistently without a reaction. The blue tansy and centella complex is extraordinary at cushioning the azelaic acid and my skin has responded so positively. Four weeks in and my redness is dramatically reduced, my post-acne marks are fading and my complexion looks genuinely healthy for the first time in a long time. Cannot recommend this enough.
I've struggled with hormonal breakouts and the dark marks they leave behind for years. This serum has been the first thing to actually make a consistent visible difference to my hyperpigmentation. The azelaic acid is clearly working on my pigmentation cells and the calming complex means I haven't experienced any of the irritation I got with other acid serums. Six weeks in and my skin tone is unrecognisable compared to where it was. Genuinely remarkable product.
I have tried AHAs, BHAs and retinol and all of them have left my reactive skin worse off. Azelaic acid was recommended as the gentlest effective option and this ANUA formula is the most comfortable version I've found. The results speak for themselves,my congestion has cleared, my redness has reduced and my skin tone is more even than it's been in years. I use it every morning and evening now and my skin just keeps improving. Finally found my active serum.
I have combination skin with persistent redness on my cheeks and this serum has addressed both issues beautifully. The texture is so lightweight and watery, it absorbs instantly and sits perfectly under my moisturiser and SPF. My redness has calmed down significantly and my overall skin tone is so much more even. The hyaluronic acid in the formula keeps my skin hydrated throughout the treatment which I wasn't expecting. Brilliant product from ANUA.
I was spending a fortune on clinic treatments for my PIH and congestion. This serum does the same job at home for a fraction of the price. The azelaic acid is working hard on my dark marks and the calming complex means my reactive skin has not had a single flare-up since I started. I build from twice weekly to daily in about three weeks and now use it every morning and evening. My skin has genuinely transformed and my confidence is at an all time high.
I have rosacea-prone skin and was very nervous trying a new active. This serum has been completely gentle and actually helped calm my skin down from the very first application. The blue tansy in the formula is clearly doing something remarkable, the soothing effect is immediate and visible. Four weeks in and my baseline redness has reduced significantly. My skin tone is more even than it has ever been and my texture has improved too. Life changing product for reactive skin.
My congestion has cleared, dark spots are fading and my redness is so much calmer. This serum is extraordinary.
I've tried every azelaic acid product on the market and this one is far and away the most comfortable to use. The calming complex genuinely cushions the acid and my skin adjusted so quickly. I started twice weekly and was using it daily within two weeks without a single reaction. My post-breakout marks have faded noticeably and the persistent redness around my nose and cheeks has calmed down dramatically. This is my forever active serum.
Redness calmed from the very first use. My skin looks so much more even and healthy. Absolutely love this serum.
I'm in my forties with stubborn sun damage and persistent redness and this serum has addressed both beautifully. The azelaic acid works consistently on my sun spots and the calming complex keeps my reactive skin completely settled. My complexion is so much more even and the redness that used to bother me daily is barely visible now. I use it every morning and evening and my skin just keeps improving. My friends keep asking what I've done differently. The answer is just this one serum.
Delivery took nearly two weeks with no tracking updates which was frustrating as I was keen to start using it. The serum itself is absolutely brilliant though — my redness has calmed noticeably even in the first week. Will definitely order again but hoping for faster delivery next time.
I've been searching for something to calm my redness for years and this serum is genuinely the answer. The green colour threw me off at first but within days my skin was visibly calmer and less reactive. My rosacea-adjacent redness has reduced so much and my dark spots are fading too. I built up from twice a week to daily use within three weeks with zero irritation. This is now a permanent fixture in my routine and I cannot imagine being without it.

