Regulating protection during colour & perm treatment Wella Hair & Scalp Protect Lotion is essential for protecting sensitive scalps from irritation from what can be a stressful process. An essential step in protecting your hair & scalp during colour & perms Wella Hair & Scalp Protect Lotion makes for an effective barrier against harsh chemical treatments. Directions of use Use before the colour & the perm process. Do not rinse out.