Brand from Canada: The Ordinary. A moderate-strength retinol serum that targets general signs of skin aging.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.