Yes, using SPF daily is vital throughout every season whether you are using our treatments or not! Your skin is unlikely to achieve your desired results without aggressive sun protection. We recommend using a broad-spectrum, mineral-based SPF 30+ sunblock every day, such as The Day Cream, (even if you aren't directly exposed to sunlight) and reapplying it during longer sun exposure. We also recommend taking Heliocare, which is a plant-based antioxidant to provide extra protection from the sun!
Additionally, heat sources such as cooking on the stovetop, saunas, steam rooms, or blue light, can exacerbate melasma, so always remember to apply sunblock if you are exposed to these sources as well!