Areas like the underarms, bikini, Brazilian, inner thighs, and neck often carry more pigment from friction, shaving, or previous irritation. These areas can behave differently than the rest of the client’s skin.
Your settings, your approach, and sometimes your wavelength should reflect what you see in that specific area. Do not treat the entire body the same.
Treat what you see.
Areas with more pigment are treated more conservatively.