As much as you need vitamin D, you also need sun protection. You can have both, and your skin won't get hurt or your body won't get what it needs.

The majority of the wrinkles and age spots on our faces are caused by sun exposure, which can also have more severe effects including skin cancer.

In Europe, 1 adult over 5 will get skin cancer before turning 75. Massive Sun exposure, especially during childhood will increase the probability of developing skin cancer years later. Early on, use caution as 80% of sun exposure occurs before the age of 18

The UV rays of the sun are most intense in the Europe between the hours of 10 a.m. and 4 p.m. from mid-March to mid-October. The sun may be powerful enough at this hour to harm property. If you are prone to sunburn, take extra precautions to protect your skin by:
1- Avoiding the sun at its most harmful hours, especially between 11 a.m and 3 p.m.
2 - Wearing  anti uv clothing, a hat with a wide brim, and sunglasses with UV protection.
3 - And wearing sunscreen with at least SPF 30. Apply it liberally, reapply it every 2 hours, and use it in conjunction with clothing and shade.