Thank you for sharing your photos. The spot you’re noticing under your eye looks like it could be due to a few possibilities, sometimes it’s related to mild irritation, a small patch of hyperpigmentation, or even dryness in the delicate under-eye area. Because the skin here is very thin, even minor changes can become noticeable quickly. For now, I’d recommend keeping the area well-hydrated with a gentle, fragrance-free moisturizer or an eye cream designed for sensitive skin. Ingredients such as hyaluronic acid, niacinamide, or a mild vitamin C can help with hydration and evening out tone. Be sure to apply sunscreen daily, as the under-eye area is prone to pigmentation from sun exposure. Try to avoid rubbing or scratching the area, since that can worsen discoloration or irritation. If the spot changes in size, color, or becomes bothersome, it would be important to have it evaluated further to rule out other causes.