• All skin types

• Made in :Korea

Retinol (Vitamin A): The core anti-aging ingredient. It promotes collagen synthesis to improve skin firmness and smooth fine lines; accelerates keratin metabolism to unclog pores, refine texture, and reduce dullness. The product uses stabilized retinol to reduce oxidation and irritation.
Fermented Black Rice Extract: A signature natural ingredient of HARUHARU WONDER. Fermentation enhances the absorption of nutrients (antioxidants, amino acids, vitamin B complex), soothes skin irritation caused by retinol, enhances moisture retention, and brightens the complexion.
Hyaluronic Acid (Multi-Molecular Weight): Small-molecule hyaluronic acid penetrates the stratum corneum for deep hydration; large-molecule hyaluronic acid forms a moisture-locking film on the skin surface, relieving dryness and tightness caused by retinol.
Centella Asiatica Extract: A plant-derived soothing ingredient. It repairs the skin barrier, calms mild inflammation (e.g., redness from retinol), and enhances the skin’s resistance to external stimuli.
Panthenol (Vitamin B5): Has moisturizing and repairing effects. It improves skin elasticity, reduces rough texture caused by dryness, and further reduces the irritation of retinol.
Alcohol-Free, Paraben-Free, Artificial Fragrance-Free, Mineral Oil-Free: Adheres to HARUHARU WONDER’s "clean beauty" standard, avoiding all potential irritating ingredients, ensuring the serum is mild enough for retinol beginners and sensitive skin (after tolerance building).

Usage Time: Use only at night (retinol is photosensitive; daytime use may cause UV damage or ingredient degradation).
Skin Tolerance Building (Critical for Beginners):
Week 1-2: Use once every 2-3 nights, take 2-3 drops, apply to the face (avoid eye contours, lip contours, and nasolabial folds with thin skin).
Week 3-4: If no irritation (redness, stinging, peeling) occurs, increase to once every 1-2 nights.
After 1 month: Stable tolerance can be used every night (adjust based on skin condition).
Application Steps: After evening cleansing → toner → (optional) mild hydrating serum, take an appropriate amount of retinol serum (3-4 drops for full face) on the palms.
Warm and Spread: Rub palms gently to warm the serum, then spread evenly on the face from the center to the sides (focus on areas with fine lines, such as the forehead and around the eyes).
Post-Use Hydration: After the serum is fully absorbed (about 1 minute), apply a rich moisturizer or facial oil to lock in moisture and reduce dryness/irritation.
Daytime Protection: The next morning, must use a broad-spectrum sunscreen (SPF 30+ or higher) to protect the skin from UV damage (retinol increases skin sensitivity to UV rays).