The shampoo you're asking about is a specific blend by Yardlie Professional that combines hair-smoothing and strengthening properties with ingredients traditionally used to promote hair growth.1The product is generally listed as: Yardlie Professional Red Onion & Keratin Smooth Shampoo (often described as 2-in-1, containing a Brazilian Keratin formula).Here is a breakdown of its key features and benefits:Product OverviewFeatureDetailKey IngredientsRed Onion Extract/Essence, Keratin Smooth Complex/Brazilian Protein, and often Black Seed Oil.Size500ml (or 500g).Formula2-in-1 (cleansing and conditioning/treatment benefits).Hair ConcernHair fall/loss, weak roots, thinning hair, dry, damaged, and frizzy hair.Key BenefitsThe combination of the key ingredients targets two primary goals: hair growth/health and smoothing/repair.21. Hair Growth and Anti-Hair Fall (from Red Onion & Black Seed Oil):3Reduces Hair Fall: The sulfur in onion extract is believed to strengthen roots, reduce breakage, and prevent hair thinning.4Stimulates Growth: It helps to boost scalp circulation and nourish hair follicles, promoting new hair growth.5