Zoray Sunscreen Lotion

Use sunscreen with spf of 50. U can apply at home also. Windows and fluorescent bulbs can let through uv rays that can cause damage to your skin ? so unless you're in a windowless room with no light, your skin is receiving uv radiation.

No my field of expertise, but you can try with higher SPF (Sun Protecting Factor), trial and error the one that suits your skin.

Sunscreen is must. Apply it 30 mins before sun exposure in morning. If not going outside, then also it is imperative to apply sunscreen since uv rays from devices, light coming from windows does have propensity to age our skin and cause sundamage in patients with sensitive skin. Also, reapply sunscreen every 2-3 hourly till 5 o clock in evening. Spf 30+ sunscreens are must. If you have oily face, non comedogenic, gel based formulations should be used. For any further queries of such kind, you can reach out to me anytime.

Yes it is good to use. But understand this. Any sunscreen will help upto certain extent only. There is no cream in the world that give 100% protection. So better cover the skin properly.

Yes sunscreen do prevent tanning if applied in correct quantity and frequently though no sunscreen can prevent sun tanning hundred percent. Apply every two hours of you are outdoor.