Brand positioning defines a brand's unique benefits for a target consumer compared to competitors. It consists of providing a need, specifying the target consumer, highlighting a differentiated benefit, and giving reasons to believe in that benefit. For Sunsilk shampoo in Vietnam, the brand positioning is modern women aged 18-40, differentiated by its 7 hair experts with 200 years of combined experience providing customized hair solutions, and reasons to believe are truly personalized products and a competitive but unique price point.