Can Retin-A Stop Working Once Skin Has Developed a Tolerance to It?

The benefits of Retin A are cumulative and one should stay on it forever, in my opinion. Make sure you are either using the Retin A micro gel 0.1%, (not any generic) for optimal  stability and bioavailability. I do love Tazorac and it might be worthwhile to upgrade, but it is not correct for you to think you must continue to see irritation for the benefits to occur for your skin.

Retin A helps decrease skin pigmentation and sallowness as well as minimize fine wrinkiling due to sun damage. 

Normally the way retinoids are used is a 6 month treatment period, followed by maintenance.  All the gains in reversing sun damage with topical retinoids are lost if treatment is discontinued.  However the improvements continue widh continued treatment.

Since Retin A decreases the amount of stratum corneum (the dead skin cell layer at the very top) giving the skin a more glowing appearance, it is possible that the pigmentation which is present througout the epidermis is just more visible.  Also if sunscreen is not used regularly, new pigmentation can develop as the stratum corneum provides some limited UV protection. 

You may benefit from an increase in the dose of tretinoin, as benefits are dose-dependent (the higher the dose the more benefit) but the side effects, such as irritation and redness also increase with higher doses.  If you do go to a higher dose, do so slowly, introducing the higher dose twice a week initially, then increasing slowly to every night.

You can decrease the irritation by using a moisturizer that is made for sensitive skin along with Retin A.

As far as tazorac vs tretinoin, tazorac has a faster onset of action but with continued use, the benefits are equivalent.

Also, remember to use the retinoids at nighttime only and to use a sunscreen every morning.

 

The first recommendation I would offer is to increase the strength of the Retin A first, it is offered in .025, .05 and .1 Cream.  You can add other supplements to the Retin A regimen such as Vitamin C (an antioxidant) for healthy skin, hydroquinone for dark spots and blotchy skin, and other collagen/growth factor ( SkinMedica) creams for yet another approach to healthy skin.