Description
Helps support the appearance of firmer skin, a more even tone and smoother-looking wrinkles with retinol 3.5%.
🚚 Fast UK delivery • 🔒 Secure checkout • ✅ 30-day satisfaction guarantee
Why Standard Retinol Serums Can Feel Confusing
With so many retinol concentrations, formulas and conflicting advice, it can be hard to know where to start — or whether you’re using the right strength. Too low and you may not see the results you’re looking for. Too high too soon and skin can feel irritated during the adjustment period. The key is finding the right strength for where your skin is now, and using it consistently.
How This Serum Works Differently
The Ammuri Retinol 3.5% High Strength Serum is a focused, single-active formula built around a 3.5% retinol concentration — designed for experienced retinol users who want a high-strength evening serum without unnecessary additives. It helps reduce the appearance of wrinkles, fine lines and uneven tone, supporting a smoother, firmer-looking complexion with consistent use.
📦 Complete Your Retinol Routine
Pair this serum with the Vitamin C Day Cream SPF 50 for essential morning protection — SPF is non-negotiable when using retinol.
→ Shop the Vitamin C Day Cream SPF 50
Why Customers Choose This Serum
🧪 High-Strength, Focused Formula
3.5% retinol in a single-active serum — for experienced users who want a concentrated evening treatment.
✨ Helps Reduce the Appearance of Fine Lines & Wrinkles
Supports a smoother, firmer-looking complexion with consistent evening use.
🌟 More Even-Looking Skin Tone
Helps support a more even-looking complexion over time, including the appearance of post-blemish marks and sun-related uneven tone.
🌿 Suitable for Many Skin Types
Patch test recommended. Start 2–3 nights per week to allow skin to adjust.
🇬🇧 UK Brand • Carefully Selected Formula
Proudly developed by a UK skincare brand. Vegan and cruelty-free.
⭐ 30-Day Satisfaction Guarantee
Shop with confidence. If you’re not satisfied, contact us within 30 days and we’ll help make it right.
Key Ingredients
Retinol 3.5%
A well-researched vitamin A derivative. Helps support the appearance of smoother skin texture, reduced fine lines and a more even-looking complexion with consistent use.
Is This Right for You?
This serum is suited to those experiencing: the appearance of fine lines and wrinkles | uneven skin tone | post-blemish marks | dull or rough-looking skin texture | skin that hasn’t responded to lower-strength retinol
Suitable for many skin types. Patch test before first use. Not recommended during pregnancy or breastfeeding — consult your GP or dermatologist if unsure.
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Experienced retinol users seeking a concentrated formula — suitable for those who have already built retinol tolerance and want a high-strength, focused 3.5% serum as their primary anti-ageing step
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The appearance of deeper lines, wrinkles and loss of firmness — helps support the look of firmer, smoother skin over time with consistent evening use
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Uneven skin tone and the appearance of post-blemish marks — helps support a more even-looking complexion with continued use; suitable for sun-related uneven tone
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Those who prefer a focused retinol formula — formulated around retinol 3.5% for those who prefer to pair retinol with their own moisturiser or barrier support separately
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A compact 30ml high-strength evening serum — suitable for targeted evening application; absorbs quickly and layers cleanly under moisturiser
Which 3.5% Retinol Should I Choose?
All three serums contain retinol 3.5% and are suitable for evening use as tolerated. The difference is in formula and focus:
Not sure where to start? The Everyday Formula is the most accessible entry point. The Hydrating Formula is the most comfortable option for drier or more reactive skin.
How to Use
☀️ Morning Routine
Step 1: Cleanse and pat skin dry.
Step 2: Apply your usual morning serum if using.
Step 3: Follow with the Vitamin C Day Cream SPF 50 — SPF is essential every morning when using retinol.
🌙 Evening Routine
Step 1: Cleanse thoroughly and pat skin dry.
Step 2: Apply a small amount of this serum to face and neck, avoiding the eye area.
Step 3: Allow to absorb fully, then follow with your moisturiser or barrier cream.
Step 4: Begin with 2–3 nights per week. Increase frequency gradually as your skin adjusts.
Always follow with broad-spectrum SPF 30+ the following morning. If irritation occurs, reduce frequency and allow skin to adjust before increasing use again.
Perfect Pairings
☀️ Morning — Essential SPF Protection
Vitamin C Day Cream SPF 50 — SPF is non-negotiable when using retinol. This cream provides broad-spectrum protection while supporting a brighter-looking complexion in the morning.
🌙 Evening — Hydration & Barrier Support
Follow this serum with a nourishing moisturiser or barrier cream to support skin comfort during the retinol adjustment period. Suitable options include any fragrance-free, hydrating moisturiser.
🔄 Want a Hydrating Retinol Alternative?
Retinol 3.5% with Hyaluronic Acid — Hydrating Formula — combines retinol 3.5% with Hyaluronic Acid, Vitamin C, Vitamin E, B3 and Aloe Vera for built-in hydration and comfort support.
Results Timeline
Week 1–2: Skin may feel slightly different as it adjusts to retinol — this is normal; reduce frequency if needed
Week 3–4: Many customers notice skin beginning to look smoother and more even with consistent use
Week 6–8: Many customers notice a more even-looking complexion and reduced appearance of fine lines
Week 12+: With continued use, many customers report a firmer, clearer-looking complexion over time
Individual results vary. Many customers use consistently for 6–8 weeks to judge visible improvement. Daily SPF 30+ every morning is essential for best results.
Frequently Asked Questions
Is 3.5% retinol suitable for beginners?
This is a high-strength formula recommended for those who have already built retinol tolerance. If you’re new to retinol, consider starting with a lower concentration and working up gradually.
Will my skin purge when I start using this?
Some customers notice a short adjustment period when starting a new retinol, which may include temporary changes in skin texture. Start with 2–3 nights per week and increase gradually. If you experience prolonged irritation, reduce frequency or consult a dermatologist.
Do I need SPF with this serum?
Yes — always. Retinol increases photosensitivity. Broad-spectrum SPF 30+ every morning is essential to protect your skin and support your results.
Can I use this with other actives?
Retinol is best used alone in the evening. Avoid combining with other strong actives (such as AHAs, BHAs or Vitamin C) in the same routine until your skin has fully adjusted. Vitamin C is best used in the morning.
Is this safe during pregnancy or breastfeeding?
Retinol is not recommended during pregnancy or breastfeeding. Please consult your GP or dermatologist before use.
How long will one bottle last?
Used 2–3 nights per week initially, a 30ml bottle typically lasts 2–3 months or more depending on frequency of use.
Can I use this on my neck as well as my face?
Yes — apply carefully to the neck, avoiding the eye area. The neck can be more sensitive, so introduce gradually.
How does this differ from the Retinol 3.5% Everyday Formula?
The Everyday Formula is a lightweight serum suited to building and maintaining a regular retinol routine. This Concentrated Formula is a focused, single-active serum for experienced users who want a high-strength retinol step without additional ingredients.
Product Details
Size: 30ml | Skin Type: Many skin types
Made in: UK | Vegan: Yes | Cruelty-Free: Yes
🚚 Fast UK delivery • 🔒 Secure checkout • ✅ 30-day satisfaction guarantee
Ready to start your retinol routine?
Try it with confidence. If you’re not happy, contact us within 30 days and we’ll help make it right.
→ Complete your routine with the Vitamin C Day Cream SPF 50
