Dr Koo Level 2 Retinol | Repairing Vitamin A Serum
WHAT IT DOES
- pH-optimized retinol at 2000 IUs — buffered to maintain stability at the precise pH where retinoid receptors in dermal fibroblasts are most responsive, minimizing irritation while maximizing collagen gene expression
- Activates retinoid receptors (RAR/RXR) — signals fibroblasts to increase procollagen synthesis, the precursor to the collagen triple-helix that determines skin firmness and wrinkle depth
- Niacinamide (B3) barrier support — strengthens ceramide production in the stratum corneum, reducing transepidermal water loss that commonly accompanies retinol use
- Squalane + avocado oil delivery — lipid-compatible vehicles that transport retinol through the stratum corneum while reinforcing the skin barrier
- Calibrated for Level 2 tolerance — formulated for skin that has adapted to Level 1, targeting mild to moderate wrinkles, uneven texture, and fine pores
WHO ITS FOR
Mild to Moderate Wrinkles, Uneven Texture, Fine Pores
KEY INGREDIENTS
Retinol, Niacinamide, Avocado, Coconut Oil, low molecular weight hyaluronate, squalene
Quantity:
Pickup available at Dr Koo Private Practice Skincare
Usually ready in 2-4 days
Dr Koo Level 2 Retinol | Repairing Vitamin A Serum
Dr Koo Private Practice Skincare
Pickup available, usually ready in 2-4 days
10435 Clayton Road
Suite 120
Frontenac MO 63131
United States
Complimentary Shipping on Every Order
Level 2 steps up to 2000 IUs of buffered retinol, calibrated for skin that has adapted to Level 1. It encourages collagen and elastin production to soften the mild-to-moderate lines that surface on the forehead, between the brows, and around the eyes. Niacinamide (B3), avocado, and coconut oil enhance delivery deep within the skin matrix, while low-molecular-weight hyaluronic acid draws in hydration to keep the surface supple through the exfoliation that refines firmness, texture, and undertone.