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TIRTIR

TIRTIR Niacinamide 20% Serum

£21.99

Taxes included.

A potent 20% niacinamide serum that visibly refines pores, fades dark spots and unveils a luminous, glass-skin glow. TIRTIR’s high-strength brightening treatment delivers an extraordinary 200,000ppm of niacinamide alongside a triple-bri... Read more

Free UK shipping on orders over £25 2–3 day UK delivery 100% genuine K-beauty, shipped from the UK
Product Info

A potent 20% niacinamide serum that visibly refines pores, fades dark spots and unveils a luminous, glass-skin glow.

TIRTIR’s high-strength brightening treatment delivers an extraordinary 200,000ppm of niacinamide alongside a triple-brightening complex of 2% Alpha Arbutin, Glutathione and Zinc PCA. Together they target enlarged pores, uneven tone and post-blemish marks while keeping the moisture barrier supported. The watery-gel texture sinks in instantly and layers beautifully under moisturiser for that signature K-beauty radiance.

✨ Why You'll Love It

  • Niacinamide (20%) – A high-strength dose that refines the look of enlarged pores, evens skin tone and strengthens the moisture barrier for a brighter, smoother finish
  • Alpha Arbutin (2%) – A gentle, plant-derived brightener that helps fade dark spots and post-blemish marks for a clearer, more even complexion
  • Glutathione – A powerful antioxidant that supports luminosity and helps neutralise free radicals for healthier-looking skin
  • Zinc PCA – Balances oil production and helps minimise the appearance of pores while keeping moisture locked in

Suitable for combination, oily and blemish-prone skin, this serum reveals a clearer, smoother and more radiant complexion with continued use.

💚 Clean & Conscious Beauty

  • Cruelty-free (per brand policy)
  • Fragrance-free formula
  • Free from added essential oils, parabens and sulphates
  • Note: contains Retinol — evening use and daily SPF recommended
  • Suitable for: Combination, oily and blemish-prone skin

How to Use: After cleansing and toning, dispense 2–3 drops onto fingertips and gently pat into face. Follow with moisturiser and SPF in the morning. Use AM and/or PM.

⚠️ Hazards & Cautions

Contains Retinol — patch test before first use, avoid during pregnancy or breastfeeding, and always wear daily SPF. For external use only. Avoid contact with eyes. Keep out of reach of children. If irritation occurs, discontinue use.

Size: 30ml

Shipping & Delivery

We work quickly to ship your order as soon as possible. Once your order has shipped, you will receive an email with tracking information. Delivery times vary depending on your location.

Product reviews

Customer reviews

What customers say about shopping with us

4.8
★★★★★★★★★★
68 verified customer ratings
5 ★ 93%
4 ★ 4%
3 ★ 0%
2 ★ 0%
1 ★ 3%
★★★★★★★★★★

I am very happy with both the product and the service I received. You can really feel the quality ingredients. My order arrived quickly, well-packaged and in perfect condition. Highly recommended product and seller — I will definitely be buying again!

Verified buyer · Jul 2025
★★★★★★★★★★

Product arrived next day following purchase. Used it for around a week now and skin is feeling great and looks hydrated. Would recommend for women over 50! Will order again.

Verified buyer · Apr 2025
★★★★★★★★★★

Great pimple patches — doesn’t irritate my sensitive skin, clears them up quickly. Would recommend 😊

Verified buyer · Aug 2024
★★★★★★★★★★

Great purchase, arrived super quick and was exactly the product I was expecting. Thanks!

Verified buyer · Nov 2025
★★★★★★★★★★

Excellent service, my items arrived the next day.

Verified buyer · Jun 2025
★★★★★★★★★★

Fast delivery and very good quality product.

Verified buyer · Mar 2026
★★★★★★★★★★

Great quality – fast delivery – packaged well – thanks x

Verified buyer · Nov 2023
★★★★★★★★★★

Super fast fulfilment and delivery. Exactly as described.

Verified buyer · May 2024
★★★★★★★★★★

Slight delay in delivery but not an issue. Was kept informed at every point.

Verified buyer · Mar 2026
★★★★★★★★★★

Really happy with this purchase, and delivery was very good.

Verified buyer · Oct 2024

Ratings and reviews are from verified Soul Skin orders.