1, All the year round, no matter what the weather, sunscreen is necessary.
2, sunscreen remember to repair at night.
3, in the outdoors to fill sunscreen.
4. Apply sunscreen for half an hour before leaving the premises.
5, apply sunscreen before the water moisturizing
6, Summer go out to suggest an umbrella, wearing sunglasses.
The penetration of ultraviolet rays is extremely strong, both in winter and in summer.
Ultraviolet light is divided into uv-a and UV-B
Uv-a lead to aging (aging)
UV-B causes buring (sunburn)
Winter sunscreen can prevent skin aging.
Summer advice to go out with an umbrella and wear sunglasses is to prevent sunburn, but also to avoid absorption of ultraviolet.