Although the veneers themselves do not last forever, the process that’s required to install them onto your smile does result in permanent changes. Some of the enamel that resides on the surface of your teeth needs to be etched off and won’t grow back. So, always take your time thinking things through before jumping in headfirst. But as is the case with most dental treatments, cosmetic, restorative, or otherwise, there is no “ideal age”. All that matters is that your teeth, gums, tissues, and bones are healthy and strong enough to withstand the treatment.