What is the difference between retinOL and retinAL

There is a difference. They are both "retinoids" or vitamin A but retiNAL is higher grade than retiNOL as its its closer to being retinoic acid which is the purest forms. The higher you go up the retinoid family the more effective it is but its also increase the risk of sensitivity and irritation

thank you to everyone who responded I learned so much 🙌❤️

Both are Retinoids Retinol requires 2 conversion steps before becoming Retinoic acid which binds to receptors on skin..also cause more irritation but affordable Retinal or retinaldehyde requires 1 conversion step before becoming its active form and irritates skin less compared to retinol but it’s very expensive

thank you this I'd something I've never known but always wondered

oooh great question!!