Start with your grooming goals: scalp health, hair growth support, or everyday styling. If you’re after therapeutic benefits, pick a brush that combines LED light therapy with massage and moisture delivery, such as models offering red light to boost circulation and strengthen roots, plus blue light to balance scalp oils and help with hair loss. The 3-in-1 options also feature three-level vibrational massage to energize the scalp. For straightforward styling with a clear control, consider brushes with an LED display and auto shut-off, and note heat levels can reach high temperatures in some models.