Why it worked
The use of a simple, visual 'before/after' comparison format with clear checkmarks provides immediate, actionable value to the viewer without requiring a long explanation.
Product placement
Heads & Shoulders (appears as 'heads' and 'Head.shou', watermark/logo), Chosbe (acts as the recommended product for hair health), Rejoice (acts as a recommended product), Pantene (appears as 'Head.shou' label, logo). Removing the Chosbe bottle would change the video's conclusion, as it is the primary subject of the positive comparison.