Principia Skincare · BR-Beauty
Best Principia Skincare Products for Oily Skin
6 Principia Skincare picks that actually work on oily skin — ranked by editor rating, not by what the brand pushes hardest. Updated 2026.
Brazil's "active-first" indie hero. Nothing flashy, everything dosed seriously. Polishing, retinol, vitamin C at a real price.
Principia Skincare
8.6/10 · serumNiacinamida 10% Serum
Principia's bestseller and the product that put Brazilian direct-to-consumer skincare on the map. 10% niacinamide + zinc PCA in a stripped-back formula that's basically The Ordinary's approach with Brazilian R&D. At R$89 (~$18 USD), it undercuts imports by half and delivers the same sebum-regulating, pore-minimizing, post-inflammatory-hyperpigmentation-fading results that make niacinamide the consensus oily-skin active. The minimalist INCI list is the point — no fragrance, no silicones, no filler. Principia is doing for Brazil what The Ordinary did for the West: evidence-based actives at accessible prices.
Principia Skincare
8.4/10 · tonerAL-07 Tônico com 7% Ácido Lático + 1% Ácido Salicílico
Principia's dual-acid exfoliating toner — 7% lactic acid (AHA) + 1% salicylic acid (BHA) in an 8-ingredient formula that's pure Principia minimalism. Lactic acid resurfaces and brightens while salicylic acid clears pores from the inside — the AHA/BHA combo is the single most effective approach for acne-prone skin that also wants texture refinement. At R$50 (~$10 USD), the ingredient list is shorter than most luxury serums' and more effective than most of them too. The Ordinary wishes they'd thought of this first.
Principia Skincare
8.3/10 · sunscreenProtetor Solar PS-01 FPS 60
Principia's PS-01 is the sunscreen that made Brazilian skincare enthusiasts rethink the price-to-protection ratio. FPS 60 with a six-filter system — phenylbenzimidazole sulfonic acid (Ensulizole), avobenzone, Tinosorb S (bisethylhexyloxyphenol methoxyphenyl triazine), ethylhexyl triazone, octisalate, and Tinosorb M (methylene bis-benzotriazolyl tetramethylbutylphenol) — delivers industrial-strength broad-spectrum protection with the photostability that cheaper formulas skip. The inclusion of both Tinosorb S and Tinosorb M as stabilizers means this formula doesn't degrade under prolonged UV exposure the way pure avobenzone formulations do. Niacinamide and tocopheryl acetate (vitamin E) add antioxidant and skin-barrier benefits beyond pure UV filtration. The aqua-first, silicone-free base dries to a matte-satin finish without the heavy cast of mineral sunscreens. Under $20 for 60ml of FPS 60 is pharmacy-tier pricing for dermatologist-tier protection — Principia's founding mission of making clinical skincare affordable to all Brazilians, executed perfectly.
Principia Skincare
8.1/10 · essenceC-Proof Booster Essence
Brazil's answer to "do I really need a separate vitamin C" — Principia put 10% EAA, niacinamide, and ferulic acid into a watery pre-serum step and called it a day.
Principia Skincare
8/10 · serumNiacinamida 10% + Zinco
Brazil's The Ordinary answer. Clinical niacinamide with zinc PCA at a fair price.
Principia Skincare
8/10 · serumGlycolic Acid
Serum with 9.8% glycolic acid and 4% amino acid composition for visible improvement in fine lines and wrinkles, acne, uneven skin tone and texture.