All of the following products may be a good choice for the décolleté EXCEPT _________.

• A. Retinol cream
• B. Vitamin C serum
• C. Alpha hydroxy acids
• D. Moisturizing lotion

Answer: (C)

The key idea is that the décolleté has delicate, thinner skin that benefits from gentle care and protection, not aggressive exfoliation. Alpha hydroxy acids are exfoliating agents that remove the outer skin layer, which can easily irritate the sensitive chest area, causing redness, stinging, or even irritation if overused or used at higher concentrations. This makes them a poorer fit for the décolleté compared with gentler options. In contrast, a retinol cream can be used in low concentrations to support collagen and skin texture, a vitamin C serum provides antioxidant protection and brightening, and a moisturizing lotion offers hydration and barrier support with lower irritation risk. So the exfoliating acids are the least suitable choice for this delicate area.