These two serums take different paths to a similar destination. Both formulas include solid hydrating ingredients, and the overall scores reflect that — the gap here is genuinely slim.
Hydration Efficacy is another area of separation. innisfree Retinol Green Tea PDRN™ Korean Firming & Smoothing Serum for Slow-Aging scores 7.0 here versus 6.4 for Centellian24 Madeca Ampoule. That difference comes down to how each formula is built — the ingredient list tells the story.
innisfree Retinol Green Tea PDRN™ Korean Firming & Smoothing Serum for Slow-Aging brings Niacinamide, Allantoin, and Tocopherol as actives, while centellian24 Madeca Ampoule relies on Niacinamide, Madecassoside, and Asiaticoside. Both approaches have merit, but the positioning and supporting ingredients make the difference.
Both sit in the mid-range bracket, so value comes down to formulation quality. innisfree Retinol Green Tea PDRN™ Korean Firming & Smoothing Serum for Slow-Aging gets the nod here with its 8.5 overall score — you're getting more for a similar outlay.