Which of the following statements is true regarding skincare routines?

The statement regarding skincare products being applied from thinnest to thickest is accurate and reflects a widely accepted principle in skincare routines. The rationale behind this approach is based on the absorption and effectiveness of the products. Thinner formulas, such as toners and serums, are designed to be absorbed quickly into the skin and provide concentrated benefits. When applied first, they can penetrate more effectively without being blocked by heavier products.

Following this principle, thicker products, like moisturizers or creams, are applied afterward. This layering helps to lock in the benefits of the thinner products while providing a barrier to prevent moisture loss. Properly sequencing skincare products in this manner maximizes their efficacy and ensures that each product serves its intended purpose in the routine.

The other options do not align with established skincare practices. For instance, the idea that all products should be applied immediately after one another neglects the importance of allowing certain products, particularly serums and treatments, time to absorb before applying heavier products. Similarly, suggesting that only serums matter in a skincare regime overlooks the essential roles played by other products like cleansers, exfoliants, and moisturizers. Finally, applying moisturizers before serums contradicts the principle of layering products from thinnest to thickest