{"product_id":"principia-mix-01-multi-acid-serum","title":"Principia Mix-01 Multi-Acid Serum for Oil Control \u0026 Blemish-Prone Skin, 1.01 fl oz (30 mL)","description":"\u003cp\u003e\u003cstrong\u003ePrincipia Mix-01\u003c\/strong\u003e is a Brazilian dermocosmetics night serum created for modern, high-performance routines that prioritize clarity, comfort, and visible refinement. With a calibrated blend of \u003cspan class=\"font-semibold\"\u003e4 proven actives\u003c\/span\u003e—\u003cspan class=\"font-semibold\"\u003e5% niacinamide, 4% glycolic acid, 3% tranexamic acid, and 2% salicylic acid\u003c\/span\u003e—this formula helps support a smoother-looking texture, less visible congestion, and a more balanced, luminous finish over time.\u003c\/p\u003e\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli class=\"py-0\"\u003e\n\u003cspan class=\"font-semibold\"\u003e\u003cstrong\u003eOil control\u003c\/strong\u003e:\u003c\/span\u003e Helps reduce the look of excess shine and supports a more balanced finish.\u003c\/li\u003e\n\u003cli class=\"py-0\"\u003e\n\u003cspan class=\"font-semibold\"\u003e\u003cstrong\u003eBlemish and blackhead care\u003c\/strong\u003e:\u003c\/span\u003e Helps keep pores looking clearer and supports fewer visible clogs over time.\u003c\/li\u003e\n\u003cli class=\"py-0\"\u003e\n\u003cspan class=\"font-semibold\"\u003e\u003cstrong\u003eSmoother texture\u003c\/strong\u003e:\u003c\/span\u003e Helps refine the look of uneven texture for a softer feel.\u003c\/li\u003e\n\u003cli class=\"py-0\"\u003e\n\u003cspan class=\"font-semibold\"\u003e\u003cstrong\u003eRadiance support\u003c\/strong\u003e:\u003c\/span\u003e Helps improve the look of dullness for a healthier-looking glow.\u003c\/li\u003e\n\u003cli class=\"py-0\"\u003e\n\u003cspan class=\"font-semibold\"\u003e\u003cstrong\u003ePore appearance support\u003c\/strong\u003e:\u003c\/span\u003e Helps reduce the look of enlarged pores with consistent nightly use.\u003c\/li\u003e\n\u003cli class=\"py-0\"\u003e\n\u003cspan class=\"font-semibold\"\u003e\u003cstrong\u003eDermatologically tested (brand-reported)\u003c\/strong\u003e:\u003c\/span\u003e The brand reports primary irritation and sensitization testing with no irritation observed in participants.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cspan class=\"font-semibold\"\u003eHow to use\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli class=\"py-0\"\u003eApply on \u003cspan class=\"font-semibold\"\u003ealternate nights for 1 week\u003c\/span\u003e, then \u003cspan class=\"font-semibold\"\u003eevery night\u003c\/span\u003e as tolerated.\u003c\/li\u003e\n\u003cli class=\"py-0\"\u003eUse on \u003cspan class=\"font-semibold\"\u003eclean, dry skin\u003c\/span\u003e before creams.\u003c\/li\u003e\n\u003cli class=\"py-0\"\u003eDispense a few drops onto fingertips (avoid touching the dropper to skin) and spread gently over the face.\u003c\/li\u003e\n\u003cli class=\"py-0\"\u003eAvoid the eye area. Use sunscreen daily and minimize sun exposure while using exfoliating acids.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn a \u003cspan class=\"font-semibold\"\u003e60-day perceived efficacy study\u003c\/span\u003e, participants reported improvements in: \u003cspan class=\"font-semibold\"\u003etexture (100%)\u003c\/span\u003e, \u003cspan class=\"font-semibold\"\u003eblackheads (97%)\u003c\/span\u003e, \u003cspan class=\"font-semibold\"\u003esoftness (97%)\u003c\/span\u003e, \u003cspan class=\"font-semibold\"\u003eradiance (97%)\u003c\/span\u003e, and \u003cspan class=\"font-semibold\"\u003eoiliness (91%)\u003c\/span\u003e. The brand also reports instrumental measurements over 60 days suggesting improvements in firmness and elasticity indicators.\u003c\/p\u003e\n\u003ch3\u003eIngredients Highlights\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli class=\"py-0\"\u003e\n\u003cspan class=\"font-semibold\"\u003e\u003cstrong\u003eNiacinamide (5%)\u003c\/strong\u003e:\u003c\/span\u003e A stable form of vitamin B3 associated with supporting oil balance and improving the look of blemish-prone skin. Commonly used to help refine the look of pores and uneven texture in modern routines.\u003c\/li\u003e\n\u003cli class=\"py-0\"\u003e\n\u003cspan class=\"font-semibold\"\u003e\u003cstrong\u003eGlycolic Acid (4%)\u003c\/strong\u003e:\u003c\/span\u003e A sugarcane-derived AHA with a small molecular size that helps promote surface-level exfoliation and skin renewal, supporting a smoother look and helping prevent the buildup of dead skin cells that can make pores look more noticeable.\u003c\/li\u003e\n\u003cli class=\"py-0\"\u003e\n\u003cspan class=\"font-semibold\"\u003e\u003cstrong\u003eTranexamic Acid (3%)\u003c\/strong\u003e:\u003c\/span\u003e A synthetic derivative of the amino acid lysine used in skincare to help support a more even-looking tone and reduce the appearance of dark marks, including those related to blemishes and sun exposure (appearance-focused cosmetic claim).\u003c\/li\u003e\n\u003cli class=\"py-0\"\u003e\n\u003cspan class=\"font-semibold\"\u003e\u003cstrong\u003eSalicylic Acid (2%)\u003c\/strong\u003e:\u003c\/span\u003e A BHA known for supporting pore clarity by helping exfoliate inside the pore lining. Commonly used in routines that target excess oil and the look of blackheads and blemishes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"size-full [\u0026amp;\u0026gt;*:first-child]:mt-0 [\u0026amp;\u0026gt;*:last-child]:mb-0 space-y-2\"\u003e\n\u003ch4\u003eAllergen warnings \/ cautions\u003c\/h4\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"size-full [\u0026amp;\u0026gt;*:first-child]:mt-0 [\u0026amp;\u0026gt;*:last-child]:mb-0 space-y-2\"\u003e\n\u003cul class=\"ml-1 list-outside list-disc\"\u003e\n\u003cli class=\"py-0\"\u003eFor external use only. Do not apply on irritated, broken, or compromised skin.\u003c\/li\u003e\n\u003cli class=\"py-0\"\u003eAvoid eyelids and the eye area; rinse thoroughly if contact occurs.\u003c\/li\u003e\n\u003cli class=\"py-0\"\u003eDuring the first week, use small amounts on alternate nights; temporary stinging, tingling, or dryness may occur.\u003c\/li\u003e\n\u003cli class=\"py-0\"\u003eIf irritation persists, stop use and seek medical guidance.\u003c\/li\u003e\n\u003cli class=\"py-0\"\u003eAvoid sun exposure during use; wear daily broad-spectrum sunscreen.\u003c\/li\u003e\n\u003cli class=\"py-0\"\u003eIf pregnant or breastfeeding, consult a physician before use.\u003c\/li\u003e\n\u003cli class=\"py-0\"\u003eKeep out of reach of children. Do not use on children.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan class=\"font-semibold\"\u003ePrincipia\u003c\/span\u003e \u003c\/strong\u003eis a Brazilian \u003cstrong\u003edermocosmetics \u003c\/strong\u003ebrand founded in 2020 in São Paulo with a clear mission: \u003cspan class=\"font-semibold\"\u003edemocratize high-performance \u003cstrong\u003eskincare\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e \u003c\/strong\u003ethrough science-backed formulas, radical ingredient transparency, and fair, accessible positioning. Instead of relying on hype, Principia focuses on what matters most for results-driven routines—\u003cstrong\u003e\u003cspan class=\"font-semibold\"\u003eactive ingredients at disclosed percentages\u003c\/span\u003e, straightforward formulations, and a minimalist, clinical aesthetic designed for everyday use.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"size-full [\u0026amp;\u0026gt;*:first-child]:mt-0 [\u0026amp;\u0026gt;*:last-child]:mb-0 space-y-2\"\u003e\n\u003cdiv class=\"size-full [\u0026amp;\u0026gt;*:first-child]:mt-0 [\u0026amp;\u0026gt;*:last-child]:mb-0 space-y-2\"\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan class=\"font-semibold\"\u003eIs Principia Mix-01 suitable for all skin types?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe brand indicates it is suitable for all skin types. Because it contains multiple exfoliating acids, sensitive skin types may prefer a slower introduction.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"size-full [\u0026amp;\u0026gt;*:first-child]:mt-0 [\u0026amp;\u0026gt;*:last-child]:mb-0 space-y-2\"\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan class=\"font-semibold\"\u003eHow often should I use Mix-01?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eStart on alternate nights for one week, then use nightly as tolerated. If dryness occurs, reduce frequency and support with a barrier-friendly moisturizer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"size-full [\u0026amp;\u0026gt;*:first-child]:mt-0 [\u0026amp;\u0026gt;*:last-child]:mb-0 space-y-2\"\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan class=\"font-semibold\"\u003eCan I use Mix-01 with vitamin C or retinoids?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMany routines can combine actives, but to reduce the risk of irritation, consider alternating nights and avoid stacking multiple strong exfoliants in the same routine.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"size-full [\u0026amp;\u0026gt;*:first-child]:mt-0 [\u0026amp;\u0026gt;*:last-child]:mb-0 space-y-2\"\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan class=\"font-semibold\"\u003eCan I apply Mix-01 near my eyes?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. Avoid the eye area and eyelids, and do not apply on the corners of the nose and mouth if those areas are easily irritated.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"size-full [\u0026amp;\u0026gt;*:first-child]:mt-0 [\u0026amp;\u0026gt;*:last-child]:mb-0 space-y-2\"\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan class=\"font-semibold\"\u003eIs this product cruelty-free?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe brand states it does not test on animals.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"size-full [\u0026amp;\u0026gt;*:first-child]:mt-0 [\u0026amp;\u0026gt;*:last-child]:mb-0 space-y-2\"\u003e\n\u003cp\u003eComplete your routine by exploring \u003cspan class=\"text-gray-500\" title=\"Blocked URL: {{INTERNAL_LINK}}\"\u003eour curated \u003ca href=\"https:\/\/mkpbr.com\/collections\/principia\"\u003ePrincipia Collection\u003c\/a\u003e\u003c\/span\u003e for a clean, balanced, everyday glow.\u003c\/p\u003e\n\u003ch3\u003eAdd Principia Mix-01 to your nightly lineup and elevate your glow with Brazilian dermocosmetic precision.\u003c\/h3\u003e\n\n\n\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 18px; background: #F6F7FB; border: 1px solid #E7E9F3; border-radius: 14px; padding: 12px; color: rgba(20,32,62,.74); font-size: 12.5px; line-height: 1.6; max-width: 100%; box-sizing: border-box; overflow: hidden;\"\u003e\n\u003cstrong style=\"color: #14203e;\"\u003eDisclaimer:\u003c\/strong\u003e For external use only. Patch test before use and discontinue use if irritation occurs. Individual results may vary. Product packaging may be labeled in Portuguese. Our Brazilian-brand products are sourced in Brazil and are regularized with ANVISA (Agência Nacional de Vigilância Sanitária), Brazil's national health authority, under the applicable regulatory framework for each product category. ANVISA regularization applies to the Brazilian market and is not equivalent to U.S. FDA approval. See our full \u003ca href=\"\/en-cz\/pages\/disclaimers\" style=\"color: rgba(20,32,62,.74); text-decoration: underline;\"\u003eDisclaimers \u0026amp; Important Information\u003c\/a\u003e.\u003c\/div\u003e","brand":"Principia","offers":[{"title":"Default Title","offer_id":52624408150332,"sku":"MKPBR2024-1969","price":835.9,"currency_code":"CZK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0090\/2840\/3278\/files\/principia-mix-01-multi-acid-serum-for-oil-control-1-01-fl-oz-30-ml-front-bottle-buy-now-at-mkpbr-com-worldwide-shipping_45b8ad7b-3cef-4803-b2b3-005dc5eada1c.png?v=1784526103","url":"https:\/\/mkpbr.com\/en-cz\/products\/principia-mix-01-multi-acid-serum","provider":"MKPBR - Shine Like a Brazilian","version":"1.0","type":"link"}