Retinol 0.5% in Squalane offers a water-free solution containing 0.5% retinol—an ingredient that improves the appearance of fine and dynamic lines that arise from a loss of collagen and elastin, while evening skin texture and tone. What’s more, this intermediate formula is supported with squalane, a moisturizing agent naturally found in your skin that enhances surface-level hydration and helps combat the dryness that can be associated with retinol use. The Ordinary Tip: Start with Retinol 0.2% in Squalane and slowly work your way up to Retinol 0.5% in Squalane and Retinol 1% in Squalane. That said, if you are prone to sensitivity, you may prefer to use newer retinoid technologies, such as those found in our Granactive Retinoid 2% Emulsion. For more tips on how to use Retinoids, be sure to explore our Retinoid Guide. Note: Once opened, this formula should be refrigerated and used within a three-month period. Caution: Retinoids can make the skin more sensitive to UV radiation. Sun protection is particularly important when using retinoids. This product must not be used in conjunction with other retinoids including retinol or retinoic acid. This product is not a treatment for acne. Note: When pregnant or breastfeeding, it is recommended to avoid any skincare products containing retinoids such as formulations with Granactive Retinoid or Retinol.