A serum that blends three of the most talked-about skincare ingredients of 2026 has been discounted to under £16. The haruharu wonder Rose PDRN Firming Serum with Retinal, typically priced at £19, is now available for £15.85 for a limited period on Amazon.
K-Beauty Surge and Trending Ingredients
Korean beauty continues to dominate the skincare market, driven by social media and formulas that feature restorative, hydrating ingredients. Among the most sought-after ingredients this year are rejuvenating PDRN and anti-ageing retinal. This serum brings them together in one affordable product.
The haruharu wonder Rose PDRN Firming Serum launched in January 2026, and a 17% discount so soon after release is unusual, making it an ideal opportunity to try it.
What Are PDRN and Retinal?
PDRN is typically associated with injectable treatments at aesthetic clinics, often derived from salmon sperm, but haruharu wonder uses a vegan alternative. The serum features vegan Rose PDRN, which revives dull-looking skin, smooths uneven texture, and promotes a naturally glowing complexion, according to the Mirror.
Retinal is regarded by many skincare specialists as a step above conventional retinol. This serum contains 0.1% retinal, which refines rough patches, softens visible lines, and promotes a smoother, glowing look without overwhelming sensitive skin.
Clinical Results and Customer Reviews
Clinically shown to improve firmness, smoothness, and radiance, the serum also incorporates haruharu wonder's patented Phyto-Velvet Network for a weightless, non-sticky finish. A 5-peptide complex helps improve elasticity, boost smoothness, and enhance overall tone, leaving skin plumper and bouncier.
Intended for evening use due to retinal, the serum has earned a 4.5-star rating on Amazon. One customer, who found previous products irritating, said: 'I bought this and used it every night for 2-3 weeks. My face is back to being nice and plump - no breakouts either. I was always super satisfied with Korean skincare and this one didn't disappoint.'
Another reviewer, who had 'tried multiple retinol products' and 'hated every' one, shared: 'I decided to give haruharu wonder rose PDRN firming serum a shot. I am so glad I did. This PDRN retinal combo hits all the marks for me. This stuff is so gentle, light, and feels like a dream when applied. Soaks in immediately, no pilling, no stained pillow cases, no greasy feeling, just a nice satin finish. I use it nearly every night and there has not been a single flake or dry patch just clear even glowing skin. In case you couldn't tell I am in love and this will be my ultimate holy grail beautiful skin bestie.'
However, some customers noted yellow marks on bedding due to retinal's natural golden hue. A further five-star review stated: 'It goes on so nicely and feels more gentle than normal retinol. I wake up with glowing skin. I'm in my mid-40s and people often think I'm in my late 20s-early 30s when they meet me and are shocked when they find out my real age. I use this on all the days I'm not using a stronger retinol 3x/week.'
Comparison with Other Products
At LookFantastic, the INNISFREE Retinol Green Tea PDRN Firming Serum 25ml is reduced to £24.80 from £31, though it uses retinol rather than retinal. Medik8's Exo-PDRN Prismatic+, priced at £79, features vegan PDRN but no retinal, and can be paired with their Crystal Retinal.
On Amazon, haruharu wonder's Black Rice Moisture Airyfit Daily Sunscreen SPF50+/PA++++, a personal favourite of writer Bethan Shufflebotham, dropped from £17 to £14.22 during Prime Day. The Black Rice Bakuchiol Eye Cream is now £12.26, reduced from £13.27.
