Can I use 2 different moisturizer for this method? Or just one moisturizer? 
For example, first moisturizer is Cerave PM Facial Moisturizing Lotion, the second one is Cosrx Advanced Snail 92 all in one cream.
Or can say that first sandwich is the lightweight moisturizer then the second sandwich is heavy moisturizer.
By the way I'm using Cerave resurfacing retinol serum.

Thank you.

Retinol Sandwich Method

Mine is in the pictures below.

But I have tried Isntree HA watery sun gel. 
It's my number 1.

Do you have any new sunscreen you wanna try in this new month?

To be honest, I really like this one. Just I cannot stand it smell, I don't know how to describe this kind of smell. I dunno if it's just me or there is anyone else experiencing this unpleasant smell when reapply it. Ig only it doesn't have this unpleasant smell, I would considered repurchase. It end up be a sunscreen for my arm and hands. XD

Overall, it's very good lightweight sunscreen that you could have ever asked for. It leave no white cast, very hydrating, and lightweight. It's one of the less favorite sunscreen among my loved ones. 

Nothing bad to say about it. Although it contain fragrance but it smells pleasant so I really love it.

It is a chemical sunscreen, easy to blend in, easy to apply too. It is quite good for everyday wear when you don't need to go outside so much. Its texture is not too creamy and not too liquidity, it is just right. I love it so much. 

JCKANHA