Luster Tea Tree Shampoo (Sulphate & Paraben Free) Pack of 4- 210 ml each. Luster Hair loss control therapy shampoo contains the best quality tea tree oil that's a healthy restorative hair treatment for dull, dry, frizzy hair. Enriched with goodness of tea tree oil. Improve your hair-cleansing routine with Luster shampoos to get the best results possible. Boosts hair growth, longer and darker hair growth, shine and lustre, soft and silky hair, prevents hair loss.