Is it okay to use these products together? And how to layer them.

Is it okay to use The Ordinary Niacinamide serum after I use the AHA BHA toner? •yes, you can use niacinamide after the toner! If you do notice any irritation, alternate them but in general, it is not a conflict. Also, what time can I use the AHA BHA toner? at night? Or in the morning? Or can I use them in the morning AND night? •I think it’s best use it once a day since it is exfoilaition and especially if you are a beginner in exfoilaition - this toner is really gentle so it’s perfect for everyday use. Because it is gentle, you could use it in the morning as long as you wear sufficient SPF! I personally like to put any exfoilaition at night. And lastly, regarding the Snail Power Essence, how do I insert that into my skincare routine? •you can put this into your routine after toner/ or at the toner step since you do not use a toner! It’s best to apply on damp skin and can be used twice a day! It’s based on your preference how often you use it. AM: iWhite Brightening Facial Wash •COSRX SNAIL ESSENCE iWhite Aqua Moisturizer Quick Fx Eye Cream Quick Fx Sunscreen PM: Garnier Micellar Cleanser iWhite Brightening Facial Wash •COSRX SNAIL ESSENCE The Ordinary Niacinamide 10% Zinc 1% Quick Fx Eye Cream iWhite Aqua Moisturizer