A newly-launched Korean anti-ageing serum, reduced to £15.96 in the Amazon Prime Day sale, has garnered rave reviews from shoppers who say it delivers remarkable results. The haruharu wonder Rose PDRN Firming Serum with Retinal, usually priced at £19, combines three of the beauty industry's most sought-after ingredients for 2026: rejuvenating PDRN, anti-ageing retinal, and a patented Phyto-Velvet Network for a weightless finish.
Shoppers Report Visible Age-Defying Results
One five-star reviewer wrote: '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.' Another customer, who had previously sworn off retinol products, called the serum 'my ultimate holy grail beautiful skin bestie,' noting it left no flakes or dry patches, just 'clear even glowing skin.'
The serum has earned a 4.5-star rating on Amazon, with users praising its gentle yet effective formula. One shopper, who experienced irritation from other products, 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.'
Key Ingredients: Vegan PDRN and Retinal
PDRN is an ingredient typically associated with injectable treatments in aesthetic clinics, often derived from salmon sperm, but haruharu wonder uses a vegan alternative. The serum's vegan Rose PDRN helps refresh dull-looking skin, smooth uneven texture, and support a naturally radiant complexion. It also contains 0.1% retinal, which many skincare experts consider a step up from traditional retinol. Retinal works overnight to refine rough patches, soften visible lines, and promote a smoother, glowing look without overwhelming sensitive skin.
Clinically shown to improve firmness, smoothness, and radiance, the serum also features a 5-peptide complex that targets elasticity, boosts skin smoothness, and enhances overall tone, leaving skin feeling plumper and bouncier. The patented Phyto-Velvet Network ensures a non-sticky finish.
Prime Day Discount and Other Deals
The 16% discount on the haruharu wonder serum is notable for a product launched in January 2026, as beauty items rarely see such reductions so soon after release. The serum is designed for evening use due to the retinal content, though some customers have noted that retinal's natural golden colour can leave yellow marks on bedding.
Alongside the serum, haruharu wonder offers other discounted products on Amazon Prime Day. The Black Rice Moisture Airyfit Daily Sunscreen SPF50+/PA++++ is reduced from £17 to £14.22, offering broad-spectrum protection with antioxidant-rich black rice, ceramides, niacinamide, and adenosine. The Black Rice Bakuchiol Eye Cream, priced at £12.26 (down from £13.27), uses bakuchiol, a natural retinol alternative, to target fine lines and wrinkles around the eyes.
For comparison, at LookFantastic, the INNISFREE Retinol Green Tea PDRN Firming Serum 25ml is reduced to £24.80 from £31, while Medik8's Exo-PDRN Prismatic+ costs £79 and uses a vegan PDRN with a stable tetrahedral structure for better absorption.
