This study will be conducted in accord with Declaration of Helsinki principles. After Institutional Review Board approval and informed consent is obtained, six female participants over the age of 55 years will undergo BBLST treatments to the left forearm. Inclusion criteria included Fitzpatrick skin type II or III, and a global assessment of forearm skin aging consistent with moderate or severe forearm skin aging (modified validated instrument from McKenzie et al., 2011) for treated participants. Treatments will be performed on the Sciton Joule Platform using BBL in Skintyte mode with 590ST filter. On a separate part of the arm that is clearly marked, Skintyte alone will be applied. Untreated areas will also be marked. All markings will be photographed. The same investigator will perform the treatments at 4-week intervals for a total of 3 treatments. At each treatment session, two or more passes were performed. Four weeks after the third BBL treatment, 4 mm skin biopsies will performed by Keys punch technique from the BBLST treated, ST treated and adjacent untreated skin. These specimens will be bisected and placed into either RNAlater (Ambion Cat# AM7022) or formalin solution for with H&E, von Giesen or PAS staining.