Where innisfree Gentle Retinol + Salicylic Acid Acne Serum for Blemishes + Post-Acne Scars really shines is active ingredient strength, scoring 6.0 compared to Paula's Choice Mini Must-Haves with 2% BHA Exfoliating Toner, Foaming Cleanser, & SPF 50's 6.8. Its formula features Niacinamide, Allantoin, and Lactobacillus Ferment Lysate in high positions, signalling meaningful concentrations.
innisfree Gentle Retinol + Salicylic Acid Acne Serum for Blemishes + Post-Acne Scars brings Niacinamide, Allantoin, and Lactobacillus Ferment Lysate as actives, while paula's Choice Mini Must-Haves with 2% BHA Exfoliating Toner, Foaming Cleanser, & SPF 50 relies on Ceramide Np, Ceramide Ap, and Ceramide Eop. 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 Gentle Retinol + Salicylic Acid Acne Serum for Blemishes + Post-Acne Scars gets the nod here with its 9.4 overall score — you're getting more for a similar outlay.