What is Fraxel Laser Resurfacing?

Depending on the type of fractional Fraxel laser, and depending on the type of condition and severity, acne scars, wrinkles, pores, dark discoloration (freckles, melasma, etc.) crepy skin, poor tone and texture can improve with Fraxel laser. Three main Fraxel lasers include Clear & Brilliant, Fraxel Dual / Restore, and Fraxel Repair. I spend time evaluating and examining my patients in consultation and determine with their individual needs, time commitments and risk profile,  what is the best laser for them, and discuss the recuperation, cost, benefit and risks.

Thank you for your question!
Fraxel, (profractional), and/or Co2 are best for resurfacing.  Erbium is a good alternative. I always combine lasers with microneedling/(RF/)prp for more robust outcomes. 
For skin tightening, I recommend a combination of ultherapy with RF treatments and sculptra for skin tightening. 
I recommend getting a formal evaluation with a cosmetic dermatologist. 
Best, Dr. Emer

Non
ablative Frax laser targets soft tissue to remodel and resurface the
tissue.  We use the Frax 1550 laser by Ellipse.  This Frax is a high
power, non ablative laser which delivers results without significant
downtime.  The 1550 wavelength energy works at the dermal layer of skin by
laying down a “grid” of energy that treats stimulates a healing response of the
tissue.  This serves to improve texture and tone of skin.  Frax laser
treatments can be used for general skin resurfacing, or to specifically target
concerns such as stretch marks, acne scars and surgical scars.

Fraxel had been the pioneer in fractionated laser resurfacing technology, first with re:store utilizing Erbium technology. However, the original Fraxel was found to be more helpful for pigmentation but with rather modest results for acne scarring even after 5 treatments. The new standard of care is Fractional CO2 Laser, e.g. Fraxel Repair, ActiveFx, Mixto if one can afford 6-7 days of downtime where the depth and the energy released are more optimal for acne scarring, rejuvenation, and skin cancer prevention.

The Fraxel laser uses "fractionated" laser technology to deliver laser energy to the skin. Imagine that you want to treat acne scars. Traditional Erbium and CO2 laser resurfacing work to correct acne scars by removing the whole upper layer of skin (epidermis) and part of the lower layer (the dermis). When the skin heals, it heals without the memory of these scars and thus they are improved.
With Fraxel, imagine that instead of removing 100% of the surface area of the skin (like CO2 and Erbium do, we are removing only a portion of it. The portion of skin tissue removed looks similar to the pattern you see when you hold the bristles of a brush up toward your face. All of the tips of the bristles themselves represent where the laser penetrates the skin.
The other difference is that fractional lasers tend to penetrate more deeply than Erbium lasers and can penetrate as deeply as full CO2 resurfacing. Fractional lasers are typically used for wrinkles, acne scars and sun damage.