Product placement
Head & Shoulders (appears, negative review), Pantene (appears, negative review), Garnier Fructis (appears, negative review), Dove (appears, negative review), CHOSBE (acts, demonstrated as the superior product with specific results), L'Oreal Paris (appears, negative review), TRESemmé (appears, negative review), OGX (appears, negative review), Suave (appears, negative review). Removing the negative reviews would change the context of the comparison, but CHOSBE is the only product being actively promoted through a positive result.