Using tretinoin as part of a skincare routine significantly improves skin texture and reduces signs of aging, but it also increases your skin’s sensitivity to sunlight. This makes applying sunscreen every day absolutely crucial. From my experience, I found that choosing a broad-spectrum SPF lotion that is lightweight and non-irritating allowed me to wear it comfortably alongside my tretinoin treatment. One lotion I’ve tried contains 0.025% tretinoin cream USP, which works effectively when paired with consistent sun protection. Brands like Colorescience offer mineral-based sunscreens that not only protect from UVA and UVB rays but also provide antioxidant benefits to calm and repair the skin throughout the day. I usually apply sunscreen after my tretinoin has absorbed fully, typically waiting about 20 minutes to avoid any pilling or interference. Reapplying every two hours, especially when outdoors, is key to maintaining protection. Incorporating a tinted sunscreen can also help reduce visible damage and even out skin tone. Incorporating SPF into your tretinoin regimen isn't just a recommendation—it's a necessary step to prevent sunburns, hyperpigmentation, and other types of sun-induced skin damage. Over time, this routine has helped me maintain clearer, healthier skin and minimize irritation. Embracing this protective step allows you to enjoy the full benefits of tretinoin safely and confidently.