Experts Advise on Choosing and Using Hair Oils and Masks

Cosmetic chemist Kelly Dobos explains that hair oils seal the cuticle, reduce breakage and frizz, and work best when they contain a high concentration of true oils rather than silicones or mineral oils. She notes that silicone‑infused oils can protect hair during heat styling but may cause buildup over time, so regular washing is recommended. Dermatologists Joshua Zeichner and Vladyslava Doktor caution that prolonged silicone use can weigh hair down and advise pre‑wash oil applications to lock in moisture.

Hair‑mask specialist Louise Bailey describes the difference between leave‑in and rinse‑out masks, emphasizing proper application technique, appropriate moisture levels, and timing to achieve soft, shiny hair. She highlights the role of ingredients such as oils, proteins, humectants and ceramides in delivering deep conditioning and strengthening effects.