PhD 5-in-1 Styling Treatment

A multi-tasking leave-in styling treatment from Living Proof, PhD 5-in-1 smooths, adds shine, and improves manageability without weighing hair down. Creamy yet non-greasy in texture, it suits those seeking lightweight hold and frizz control across fine to medium hair types. Notes on application, performance, and standout functional ingredients help assess fit for your styling routine.