Retinol serum for una firm and smooth skin without unwanted dryness| Forget about wrinkles and restore a youthful, radiant appearance to your skin. The firming serum The Ordinary Retinol 1% in Squalane is una anhydrous solution containing 1% retinol – one of the most effective ingredients in the fight against skin aging. Retinol firms the contours of the face, smooths wrinkles, and counteracts other skin imperfections. The other active ingredient in the serum is squalane, which hydrates the skin, preventing dryness, a possible side effect of retinol.