Xerosis & Cutaneous Scaling
True lipid-deficient dry skin characterized by a depleted intercellular lipid matrix, micro-fissuring, visible powdery desquamation, and pruritus.
Biological Mechanism
Xerosis is a true lipid deficiency distinct from dehydration. In xerotic skin, epidermal synthesis of ceramides (especially long-chain acylceramides 1 and 4), cholesterol, and free fatty acids is chronically suppressed. Without cohesive lipid lamellae, the stratum corneum cannot retain bound water. Dehydrated hydrolytic enzymes (such as steroid sulfatase and chymotrypsin) fail to dissolve desmosomes, causing dead corneocytes to detach in irregular, visible white flakes rather than microscopic single cells.
Primary Recommended Actives
Ceramides & Lipids
ROLE: Equimolar Lamellar RestorerSupplies bio-identical ceramides, cholesterol, and free fatty acids in an optimal 3:1:1 ratio to reconstruct deficient intercellular lamellae.
Hyaluronic Acid & Polyols
ROLE: Enzymatic Hydration ActivatorProvides necessary aqueous environment to reactivate desquamatory enzymes, halting dry flake formation.
Secondary & Supporting Actives
Centella & Ectoin
Profile →Calms cutaneous nerve excitability and promotes re-epithelialization across dry epidermal fissures.
Signal Peptides & Copper
Profile →Supports underlying extracellular matrix integrity to improve epidermal barrier turnover.
Ingredients & Approaches to Avoid
AM & PM Application Strategy
Photoprotection & Defense
Lipid replenishment: Non-foaming cleansing lotion + Ceramide barrier cream + Moisturizing mineral sunscreen.
Targeted Cellular Repair
Intensive moisture sealing: Hyaluronic serum on damp skin + Rich physiological lipid balm (ceramides, cholesterol, squalane).
Frequently Asked Questions
What is the difference between dry skin and dehydrated skin?
Dry skin is a genetic skin type lacking biological lipids (sebum and ceramides). Dehydrated skin is a temporary condition lacking water in the upper layers, which can occur even in oily skin.
Layering Pair Audits for This Concern
Explore Other Concerns
View all 16 concerns →Hyperpigmentation & Dark Spots
Biological melanosome transfer inhibition and tyrosinase regulation.
Clogged Pores & Comedones
Intra-follicular desquamation and sebaceous duct clearing.
Compromised Barrier & Stinging
Lamellar lipid bilayer replenishment and transepidermal water loss reduction.
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