Which of the following is the correct method for disguising puffy eyes?

Using a lighter shade of foundation in the crease and a darker shade on the puffy area is an effective technique for disguising puffy eyes. The reason this method works well is due to the principles of light and shadow in makeup application. A lighter shade applied in the crease, which is typically the area just above the eyelid, helps to create the illusion of depth and shadows, thereby making the area appear less prominent. Darker shades used on the puffy area can help to visually recede that area, making it look less swollen. This contrast draws attention away from puffiness, providing a more sculpted and refreshed appearance.

The other methods mentioned do not utilize the light and shadow technique effectively. For instance, applying only a lighter shade in the crease without addressing the puffy area with a darker shade would not help to disguise the puffiness. Similarly, focusing solely on concealer or eye shadow would not combine the effective layering of colors needed to achieve a natural-looking result.