{"product_id":"cos-de-baha-l1-serum-bakuchiol-retinol-pd-0484","title":"Cos De Baha — L1 Bakuchiol 2% · Retinol 0.15% Serum 30ml","description":"\u003cp\u003eFrom the age of thirty, collagen and elastin production gradually slows down: the first wrinkles appear, the skin loses density, and the complexion becomes dull. Retinoids are the most well-documented anti-aging active ingredients in dermatology, but their introduction must be gradual to avoid intolerance reactions.\u003c\/p\u003e\n\u003cp\u003eCos De Baha's L1 Serum is positioned as a calibrated entry point into the Korean brand's L retinol range. The formula combines 0.15% retinol (≈ 4,950 IU) — the initial concentration recommended for skin not accustomed to retinoids — and 2% bakuchiol, a plant-derived active ingredient that acts on the same nuclear receptors (RAR\/RXR) through a distinct pathway. The formula is complemented by 400 ppm adenosine (smoothing, firming), 2% niacinamide (tolerance, even skin tone), and panthenol (skin barrier comfort).\u003c\/p\u003e\n\u003cp\u003eApply 1 to 2 drops to the face and neck after cleansing and toning, before moisturizing cream, only in the evening. For a risk-free introduction: 1 application per week for the first two weeks, then twice a week for the following two weeks, then up to 3 times a week if tolerance is good. In case of dryness, alternate with a nourishing cream on evenings without serum.\u003c\/p\u003e\n\u003cp\u003eEssential precautions: always apply SPF 50+ sunscreen every morning throughout the period of use, as retinol increases skin sensitivity to UV. Contraindicated during pregnancy and breastfeeding. The formula contains naturally fragrant extracts (Lavandula angustifolia, Rosa damascena) sources of perfuming allergens (linalool, geraniol, citronellol): perform a patch test 48 hours before first use and avoid in case of known reactivity to the 26 allergens in Annex III. Do not combine with another strong active ingredient (AHA, BHA, pure vitamin C) in the same application.\u003c\/p\u003e\n\u003cp\u003eIn your routine, this serum should be applied after toner and before moisturizer. It constitutes level 1 of Cos De Baha's L progression, before L2 (0.5% retinol) and L3 (1% retinol) for skin already accustomed to retinoids.\u003c\/p\u003e","brand":"Cos De Baha","offers":[{"title":"Default Title","offer_id":53898326376785,"sku":"PD-0484","price":15.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1032\/7094\/1009\/files\/cos-de-baha-l1-serum-bakuchiol-retinol-pd-0484-1-hd.jpg?v=1788396168","url":"https:\/\/paradermia.com\/en\/products\/cos-de-baha-l1-serum-bakuchiol-retinol-pd-0484","provider":"Paradermia","version":"1.0","type":"link"}