These two spfs 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. Hyphen All I Need Sunscreen SPF 50 PA++++ scores 7.8 here versus 5.9 for Horace Sérum Acide salicylique + Niacinamide. That difference comes down to how each formula is built — the ingredient list tells the story.
Hyphen All I Need Sunscreen SPF 50 PA++++ brings Niacinamide, Ceramide Np, and Ceramide Ap as actives, while horace Sérum Acide salicylique + Niacinamide relies on Niacinamide, Zinc Pca, and Salicylic Acid. Both approaches have merit, but the positioning and supporting ingredients make the difference.