Water- and silicone-free, The Ordinary's Retinol 0.5% in Squalane features highly stable retinol, an ingredient that can reduce the appearance of ageing with impressive results A powerhouse form of vitamin A, retinol encourages cell turnover, revealing healthier, softer skin while also tackling blemishes, dark spots and defying signs of ageing - including softening the appearance of fine lines and wrinkles and uneven tone Retinol can cause significant irritation, including redness and peeling - but many feel that its significant effects counterbalance this The Ordinary recommends building your skin's tolerance to retinol with lower concentrations such as (Retinol 0.2% in Squalane) to minimise discomfort Please read the instruction carefully before using