Description

A retinol serum specially formulated for dry skin often combines low-concentration retinol (0.1%–0.3%) with hydrating ingredients like hyaluronic acid, ceramides, or oils to prevent irritation and moisture loss. 
Based on popular products that offer large sizes or are highly regarded for dry skin, here is a description of top retinol serums for dry skin in English:

Recommended Retinol Serums for Dry Skin 
Paula’s Choice Skin Recovery Antioxidant Retinol Serum (Rich Serum): A rich, concentrated antioxidant serum specifically for dry or very dry skin. It contains a gentle amount of retinol that restores moisture while defending against environmental stressors and signs of aging.
The Ordinary Retinol in Squalane (0.2%, 0.5%, or 1%): This is highly recommended for dry skin because it is formulated in a squalane oil base. Squalane provides intense hydration, mitigating the dryness often associated with retinol use.
La Roche-Posay Retinol B3 Serum: A rejuvenating serum containing retinol and Vitamin B3 (niacinamide), which helps hydrate the skin while promoting collagen production. It is designed to be gentle on sensitive and dry skin types, leaving the skin feeling smoother and renewed.
Murad Retinol Youth Renewal Serum: A fast-acting yet gentle serum that keeps skin moisturized and plump while reducing the appearance of fine lines and wrinkles. 

Key Features for Dry Skin Retinol Serums
Hydrating Base: Contains ingredients like Squalane, Glycerin, or Hyaluronic Acid to keep skin barrier hydrated.
Gentle Concentration: Uses lower percentages of retinol (e.g., 0.2%, 0.3%) to minimize flaky skin.
Anti-Aging Benefits: Boosts collagen production, reduces wrinkles, and improves skin elasticity.
Non-Greasy Formula: Fast-absorbing serums that deeply nourish without leaving a heavy residue. 

How to Use (For Dry Skin)
Cleanse: Start with a gentle cleanser.
Apply: Use 2–3 drops of the serum on a dry face at night.
Layer: If your skin is very dry, follow with a thick, hydrating moisturizer (Sandwich method: Moisturizer -> Retinol -> Moisturizer).
Frequency: Start by using it 1–2 times a week, gradually increasing as your skin builds tolerance.
Sunscreen: Always use a broad-spectrum SPF 30+ the following morning, as retinol increases sun sensitivity.