about glycolic acid

Name: omar
Question:

Hi im 17
I know that a product with glycolic acid exfoliates the outermost layer of the skin allowing the underneath layer to take place
so does that mean that you will no longer have a layer like the previous one, is that a good idea?

and i heard that you become more sensitive to sun burn so can you please advise me which is the best product to use with glycolic acid as an ingerdient and which percentage of concentration is right thanks please reply to omarmerei@gmail.com

The top layer of your skin will be replaced as you exfoliate your skin. What is the purpose of your use of glycolic acid?