{"product_id":"principia-am-10-mandelic-acid-serum","title":"Principia AM-10 Mandelic Acid Serum 10% + Alpha Arbutin 1% for Dark Spot \u0026 Oil Control Care, 1.01 fl oz (30 mL)","description":"\u003cstyle\u003e\n  .mkpbr-adeus {\n    --mkpbr-orange: #ff6b4a;\n    --mkpbr-orange-dark: #e85a37;\n    --mkpbr-black: #111111;\n    --mkpbr-muted: #666666;\n    --mkpbr-soft: #faf9f7;\n    --mkpbr-line: #ececec;\n    --mkpbr-white: #ffffff;\n    color: var(--mkpbr-black);\n    font-family: inherit;\n    font-size: 16px;\n    line-height: 1.65;\n  }\n\n  .mkpbr-adeus *,\n  .mkpbr-adeus *::before,\n  .mkpbr-adeus *::after {\n    box-sizing: border-box;\n  }\n\n  .mkpbr-adeus h2,\n  .mkpbr-adeus h3,\n  .mkpbr-adeus p {\n    margin-top: 0;\n  }\n\n  .mkpbr-adeus h2 {\n    margin-bottom: 14px;\n    color: var(--mkpbr-black);\n    font-size: clamp(24px, 4vw, 34px);\n    line-height: 1.2;\n  }\n\n  .mkpbr-adeus h3 {\n    margin-bottom: 8px;\n    color: var(--mkpbr-black);\n    font-size: 18px;\n    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.mkpbr-adeus__tag {\n    padding: 7px 12px;\n    border: 1px solid var(--mkpbr-line);\n    border-radius: 999px;\n    background: var(--mkpbr-soft);\n    font-size: 14px;\n  }\n\n  .mkpbr-adeus__notice {\n    margin-top: 18px;\n    padding: 16px 18px;\n    border-radius: 12px;\n    background: #fff2ee;\n    color: #552217;\n  }\n\n  .mkpbr-adeus__details {\n    border-top: 1px solid var(--mkpbr-line);\n  }\n\n  .mkpbr-adeus__details details {\n    border-bottom: 1px solid var(--mkpbr-line);\n  }\n\n  .mkpbr-adeus__details summary {\n    position: relative;\n    padding: 18px 42px 18px 0;\n    cursor: pointer;\n    color: var(--mkpbr-black);\n    font-weight: 700;\n    list-style: none;\n  }\n\n  .mkpbr-adeus__details summary::-webkit-details-marker {\n    display: none;\n  }\n\n  .mkpbr-adeus__details summary::after {\n    position: absolute;\n    top: 50%;\n    right: 4px;\n    color: var(--mkpbr-orange);\n    content: \"+\";\n    font-size: 24px;\n    font-weight: 500;\n    transform: translateY(-50%);\n  }\n\n  .mkpbr-adeus__details details[open] summary::after {\n    content: \"\\2212\";\n  }\n\n  .mkpbr-adeus__details-body {\n    padding: 0 36px 18px 0;\n    color: var(--mkpbr-muted);\n  }\n\n  .mkpbr-adeus__details-body p:last-child {\n    margin-bottom: 0;\n  }\n\n  .mkpbr-adeus__disclaimer {\n    margin-top: 28px;\n    padding: 18px;\n    border: 1px solid var(--mkpbr-line);\n    border-radius: 12px;\n    color: var(--mkpbr-muted);\n    font-size: 13px;\n  }\n\n  @media (max-width: 749px) {\n    .mkpbr-adeus__grid,\n    .mkpbr-adeus__steps {\n      grid-template-columns: 1fr;\n    }\n\n    .mkpbr-adeus__section {\n      padding: 28px 0;\n    }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"mkpbr-adeus\"\u003e\n\u003csection class=\"mkpbr-adeus__intro\"\u003e\n\u003ch2\u003ePrincipia AM-10\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePrincipia AM-10\u003c\/strong\u003e is a Brazilian dermocosmetics night serum designed for visible refinement—supporting clearer-looking pores, smoother texture, and a more even-looking complexion. With 10% mandelic acid (AHA) and 1% alpha arbutin, it offers a polished approach to tone and congestion concerns: gentle resurfacing paired with targeted pigment appearance support.\u003cbr\u003e\u003cbr\u003eThe result is a modern routine step that feels elegant and intentional, ideal for everyday users, salon retail, and international resellers seeking a globally understood brightening story with clearly stated active concentrations.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection class=\"mkpbr-adeus__section\"\u003e\n\u003ch2 class=\"mkpbr-adeus__section-title\"\u003eWhy you’ll love it\u003c\/h2\u003e\n\n\u003cdiv class=\"mkpbr-adeus__grid\"\u003e\n\u003cdiv class=\"mkpbr-adeus__card\"\u003e\n\u003ch3\u003eDark spot appearance support\u003c\/h3\u003e\n\u003cp\u003eHelps reduce the appearance of dark spots and supports a more even-looking tone.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mkpbr-adeus__card\"\u003e\n\u003ch3\u003eOil control\u003c\/h3\u003e\n\u003cp\u003eHelps regulate the look of excess sebum for a fresher finish.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mkpbr-adeus__card\"\u003e\n\u003ch3\u003eBlemish-prone support\u003c\/h3\u003e\n\u003cp\u003eHelps reduce the look of blackheads and blemishes by supporting clearer-looking pores.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mkpbr-adeus__card\"\u003e\n\u003ch3\u003ePore appearance support\u003c\/h3\u003e\n\u003cp\u003eHelps minimize the look of enlarged pores as surface buildup is reduced.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mkpbr-adeus__card\"\u003e\n\u003ch3\u003eSoftness + smooth feel\u003c\/h3\u003e\n\u003cp\u003eHelps refine skin texture for a softer, more polished touch.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mkpbr-adeus__card\"\u003e\n\u003ch3\u003eGlow enhancement\u003c\/h3\u003e\n\u003cp\u003eHelps improve the look of luminosity and overall radiance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mkpbr-adeus__card\"\u003e\n\u003ch3\u003eDermatologically tested (brand-reported)\u003c\/h3\u003e\n\u003cp\u003eThe brand reports irritation and sensitization testing, plus hypoallergenic \/ non-photoirritating evaluation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"mkpbr-adeus__section\"\u003e\n\u003ch2 class=\"mkpbr-adeus__section-title\"\u003eHow to use\u003c\/h2\u003e\n\n\u003cp\u003eApply on alternate nights for 1 week, then every night as tolerated. Use before creams. With a clean, dry face, dispense a few drops onto fingertips (avoid touching the dropper to skin) and spread gently over the face, including the under-eye area if tolerated.\u003cbr\u003eDo not apply on eyelids, on the outer corners of the nose and mouth, or on irritated\/broken skin. Avoid sun exposure during use and wear sunscreen daily.\u003cbr\u003e\u003cbr\u003eIn a 60-day perceived efficacy study, participants reported improvements in: tone (100%), pore size appearance (100%), softness (100%), glow (100%), oiliness (94%), melasma appearance (93%), under-eye dark circles (93%), and under-eye puffiness (93%). The brand also reports instrumental measurements related to hydration, firmness, and elasticity indicators, plus an image-based analysis showing a reduction in the length of under-eye wrinkle appearance after 30 and 60 days. Results may vary.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection class=\"mkpbr-adeus__section\"\u003e\n\u003ch2 class=\"mkpbr-adeus__section-title\"\u003eProduct highlights\u003c\/h2\u003e\n\u003cdiv class=\"mkpbr-adeus__tags\"\u003e\n\u003cspan class=\"mkpbr-adeus__tag\"\u003eMandelic Acid (10%): An AHA derived from bitter almond extract. With a higher molecular weight than some other AHAs, mandelic acid is often associated with a gentler-feeling renewal process. It supports surface exfoliation and cell turnover, helping smooth the look of texture, regulate the look of oiliness, and support pore clarity by reducing surface buildup.\u003c\/span\u003e \u003cspan class=\"mkpbr-adeus__tag\"\u003eAlpha Arbutin (1%): A biosynthetic active used to support more even-looking tone by influencing melanin-related processes. Helps reduce the appearance of dark spots and supports a brighter, more uniform complexion (appearance-focused cosmetic claim).\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mkpbr-adeus__notice\"\u003e\n\u003cstrong\u003eAllergen warnings \/ cautions:\u003c\/strong\u003e For external use only. Do not apply on irritated, broken, or compromised skin. Avoid eyelids and sensitive facial folds; avoid direct contact with eyes. If contact occurs, rinse thoroughly. During the first week, use small amounts on alternate nights; temporary stinging, tingling, or dryness may occur. If irritation persists, stop use and seek medical guidance. Avoid sun exposure during use; wear broad-spectrum sunscreen daily. Keep out of reach of children. Do not use on children. Store in a cool, dry place. According to the brand, the formula is free from parabens, petrolatum, sulfates, silicones, fragrance, and gluten. Pairing note: The brand indicates it can be used with other formulas, with some restrictions—avoid combining with high concentrations of other AHAs in the same routine. Principia is a Brazilian dermocosmetics brand founded in 2020 in São Paulo with a clear mission: democratize high-performance skincare through 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— active ingredients at disclosed percentages, straightforward formulations, and a minimalist, clinical aesthetic designed for everyday use.\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"mkpbr-adeus__section\"\u003e\n\u003ch2 class=\"mkpbr-adeus__section-title\"\u003eProduct information\u003c\/h2\u003e\n\u003cdiv class=\"mkpbr-adeus__details\"\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen should I use Principia AM-10?\u003c\/summary\u003e\n\u003cdiv class=\"mkpbr-adeus__details-body\"\u003e\n\u003cp\u003eUse it at night. Start on alternate nights for one week, then increase to nightly use as tolerated.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo I need sunscreen while using AM-10?\u003c\/summary\u003e\n\u003cdiv class=\"mkpbr-adeus__details-body\"\u003e\n\u003cp\u003eYes. Daily broad-spectrum sunscreen is essential when using exfoliating acids to help protect the look of tone and results.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs AM-10 suitable for oily or blemish-prone skin?\u003c\/summary\u003e\n\u003cdiv class=\"mkpbr-adeus__details-body\"\u003e\n\u003cp\u003eIt is suitable for all skin types and is often chosen for routines focused on oil control, pore appearance, and the look of blackheads and blemishes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I apply AM-10 around the eyes?\u003c\/summary\u003e\n\u003cdiv class=\"mkpbr-adeus__details-body\"\u003e\n\u003cp\u003eThe brand indicates safety and efficacy were evaluated for the eye area. Apply gently, avoid eyelids, and avoid direct contact with eyes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I combine AM-10 with other acids?\u003c\/summary\u003e\n\u003cdiv class=\"mkpbr-adeus__details-body\"\u003e\n\u003cp\u003eThe brand notes it can be used with other formulas, but avoid stacking with high concentrations of other AHAs in the same routine to reduce the risk of irritation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs Principia cruelty-free?\u003c\/summary\u003e\n\u003cdiv class=\"mkpbr-adeus__details-body\"\u003e\n\u003cp\u003eThe brand states it does not test on animals.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003cdiv class=\"mkpbr-adeus__disclaimer\"\u003e\n\u003cstrong\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-gr\/pages\/disclaimers\"\u003eDisclaimers \u0026amp; Important Information\u003c\/a\u003e.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Principia","offers":[{"title":"Default Title","offer_id":52626609963324,"sku":"MKPBR2024-1978","price":20.76,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0090\/2840\/3278\/files\/principia-am-10-mandelic-acid-serum-10-percent-alpha-arbutin-1-percent-1-01-fl-oz-30-ml-front-bottle-buy-now-at-mkpbr-com-worldwide-shipping_ca99d98b-646c-4dc5-aa47-f513b78ffa4b.png?v=1784529666","url":"https:\/\/mkpbr.com\/en-gr\/products\/principia-am-10-mandelic-acid-serum","provider":"MKPBR - Shine Like a Brazilian","version":"1.0","type":"link"}