i so microneedling every month for rejuvenation and often combine with clear and brilliant. this Is a life-long treatment to maintain and improve your skin, there is no "number" that you should be seeking you should be doing this as an anti-aging/preventative treatment. at home dermarolling is done weekly (see link to my protocol on emeragecosmetics.com) and cosmelan and enlighten peels can be done to enhance the outcome. For facial rejuvenation, 1) skin care with products and PRP/microneedling 2) PDT light therapy few times a month with growth factors 3) laser treatments like clear and brilliant regularly and a few times a year Fraxel/halo Viva, Co2/Erbium 4) Sculptra injections a few times a year for collagen production with fillers like juvederm/restylane/belotero/radiesse/bellafill 5) thermage/ultherapy for yearly skin tightening with or without PDO or cone based instalift threads for lifting 6) botox every 2-3 months to stop movement lines and prevent lines at rest 7) deep microneedling RF like Fractora/morpheus8 for tightening of the skin 8) Vascular laser like vbeam/excel V or BBL forever young treatment every quarter (3-4 months) Best, Dr. Emer.