Adenosine
Best for: fine lines, loss of firmness, and anyone who wants a genuine anti-ageing active without the sensitivity of retinol.
Adenosine is a KFDA-approved functional anti-wrinkle ingredient in Korea — it has to prove it works to legally claim it on a Korean label, which is a bar few skincare ingredients clear. It calms inflammation, supports collagen production, and helps skin repair itself, all without the purging or sun sensitivity that comes with retinoids. That's why you'll find it quietly doing the work in a huge range of Korean serums, ampoules, sun care and eye creams, often alongside more attention-grabbing actives like PDRN or peptides.
The IrelKGlow range includes it across PDRN serums, collagen ampoules, retinol and retinal formulas, barrier creams and daily sunscreens.
