Dry skin (or xerosis) refers to skin that chronically lacks water and/or lipids in its stratum corneum. It differs from simple constitutional dry skin in its severity: visible flakes, constant tightness, itching, roughness, and sometimes painful cracks. Xerosis can be primary (atopic dermatitis, ichthyosis, psoriasis) or secondary to extrinsic factors (central heating, hard water, detergent soaps, medications such as retinoids or diuretics). The primary mechanism is increased transepidermal water loss (TEWL) due to a deficiency in ceramides and natural moisturizing factors (NMF). Glycerin (glycerol) is the first humectant to restore—it draws water from the deeper layers and rapidly reduces TEWL.
Skincare products for dry skin fall into three complementary categories:
Dexpanthenol (provitamin B5, Bepanthensensicalm Anti-Itch Cream) accelerates the regeneration of the skin barrier and reduces itching caused by dryness.
Choosing the right cleanser is just as important as choosing a moisturizer—ordinary soap with an alkaline pH (9–10) breaks down the lipid barrier with every wash. Suitable alternatives include: emollient cleansing oils (A-Derma Exomega Control Cleansing Oil, which cleanses and moisturizes simultaneously), soap-free, ultra-rich foaming gels (A-Derma Exomega Control Foaming Gel, Ducray Ictyane), and liquid Aleppo soaps (Laino, with nourishing laurel oil). The “soak and smear” rule: apply the emollient within 3 minutes of drying to maximize the penetration of active ingredients.Argan oil (48% oleic acid, vitamin E), applied to damp skin after showering, is an effective natural emollient for mild to moderate body xerosis.
Niacinamide (vitamin B3) acts on several mechanisms simultaneously: it stimulates ceramide synthesis, increases keratin production, reduces TEWL, and has a mild anti-inflammatory effect. The SVR B3 Hydra Concentrate Repair Ampoule (niacinamide + glycerin) is formulated for dry skin with redness and reactive irritation. The CeraVe Anti-Roughness Cream (ceramides + urea + niacinamide) is the most comprehensive tri-active formula for rough and xerotic skin. These products should be used daily (morning and evening) as a 4- to 8-week treatment regimen to achieve lasting improvement.
Most cases of dry skin respond well to emollient treatments within 4 to 8 weeks. Certain signs warrant a consultation: persistence despite a rigorous 4-week emollient regimen, infected cracks or lichenified patches, intense nighttime itching that disrupts sleep, or xerosis associated with medication use. Dry skin in older adults or people with diabetes requires specific management. Internalhydration (at least 1.5 liters of water per day) remains the first step to optimize, regardless of the cause—systemic dehydration directly affects the condition of the skin.
