lebel iau serum mask must-have "name": "5S or 5M —

"name": "5S or 5M — which one is right

tightness or discomfort that sensitive skin often experiences with stronger SPF formulations

ready for an easy brush-through

part gentle scrub

lebel iau serum mask must-have "name": "5S or 5M —Lebel IAU Serum Mask is a concentrated weekly treatment from the IAU Serum line, designed for dry, thinned, frizzy or chemically processed hair that needs deep smoothing and a visible reset along the lengths. The aroma rich formula sinks into the cortex, helps the cuticle sit flatter, and leaves hair feeling elastic, glossy and easier to control. It sits as the once a week intensive step in a Lebel IAU Serum routine, applied through the lengths after