Does TNS Essential Serum truly do what it is marketed to do?

Hello and thank you for your question about retinol. Retinol can be applied around the mouth for lip lines, just stay clear of the body of the lip. It is also important to not go too close to your eye with these products as they do travel a bit once it is put on the skin. I hope this answered...

The rule of thumb when applying skin care products is THINNEST to THICKEST. Depending on your glycolic acid (is it serum based, pad, etc?) If it is a pad- I would do glycolic pad, vitamin c, TNS, and then HA5 (then sunscreen of course). But again- thinnest to thickest is the best way to go...

Thank you for sharing your question and yes you can use this product anywhere on the body.  Glad you are enjoying it.