From what age is Fraxel dual recommended?

Board-certified dermatologists make decisions about what treatment to use on a patient not based on chronological age but on factors such as skin type, skin quality, degree of damage, and desired results. There are people in their 20s whose skin has been damaged by the sun who would benefit from Fraxel Dual. There are others in their 40s who really don't need to do a major resurfacing because they've avoided the sun, still have good skin laxity and volume, and would do just fine with a chemical peel. 
The only way to know when it's time for resurfacing fine lines, scars and discoloration with Fraxel Dual is that 1) you are ready to do so; 2) you've consulted a board-certified dermatologist who agrees that Fraxel is the best solution. Be sure to consult a board-certified dermatologist who is an expert at resurfacing the skin with Fraxel:Dual to get the best results.

In cosmetic dermatology, as in medicine, it is always easier to prevent than to treat. Fraxel Dual is a relatively gentle laser. If you are already seeing signs of aging, such as lax skin, hyper- or hypopigmentation, and/or fine wrinkles, then now would be the time to start. It doesn't matter what age you are. The only thing that matters is how your skin looks and if it needs improvement. Consulting a board-certified dermatologist will help you determine for sure if you will benefit most from Fraxel Dual or another anti-aging therapy.