Doghaim NN, et al. - Authors assessed the clinical effectiveness and safety of carboxytherapy in alopecia areata and androgenetic alopecia. They conducted this study on patients with alopecia divided into 2 groups; Group I included 40 AA patients (Group IA received carboxytherapy and Group IB control received placebo), and Group II included 40 AGA patients (Group IIA received carboxytherapy and Group IIB control received placebo) and followed up monthly for 3 months. Seemingly for patchy AA, carboxytherapy was promising therapeutic option. This therapy could be helpful as an adjuvant therapy of androgenetic alopecia (AGA) but more than 6 sessions were required and adjuvants were recommended for maintenance of the results.