Retin a for Two Months and No Effect?

Yes, Retin-A can be used on the neck and chest but get specific instructions from your prescribing doctor. A moisturizer will help prevent irritation, especially in these more sensitive areas. It can be applied before or after the Retin-A micro.

Retin A should not result in lip thinning. In fact, retinoids stimulate collage production. i cannot say they would plump the lips but they should not thin them

Retinoids, such as Retin A micro, accelerate skin exfoliation, or shedding. This is most noticable at the beginning of treatment. Although exfoliation continues with treatment, it slows down and becomes less noticable over time.

I generally advise my patients to avoid washes with glycolic or salicyclic acid while on Retin A because both products exfoliate and this increases the risk of irritation.  That being said, if you are able to tolerate the combination then use of both is okay.  Be sure to moisturize...

Retin-A has a tendency to dry the skin out a lot, so I actually prefer my patients do apply the Retin-A to dry skin. Then wait a few minutes and add moisturizer over it. You will need to ask your prescribing physician if he/she has another preference, but this is the way I've done it for almost...

Did someone prescribe the Retin-A for your thighs? My assumption is "no" and you self-prescribed this, which is not good. Products need to be used on specific regions of the body and not everything can be used everywhere, or you can have severe issues, like you've experienced. In no way should...