The summer season brings hot, humid days with high intensity ultraviolet rays, which can be damaging to skin.
Always assess your day-based on the UVI (ultraviolet index) this is a measure describing the level of solar ultraviolet radiation (UVR) at the Earth's surface. The higher the UVI, the greater the chances are of skin damage. Limit your sun exposure throughout the day. Throughout the day if exposed to UV, then applying broad spectrum high protection SPF 50+, seek shade when outdoors and wear sun protective clothing. Sunglasses and hats are also a must.
Sunscreens can both be chemical or physical and need to be reapplied every two hours. Sunscreens that can absorb UVA and UVB would be better suited through summer.
Remember to always consult with a professional practitioner for advice.