The french secret to flawless skin is:  RE APPLY SUNSCREEN

  1. If it takes you 10 minutes to get burn, a SPF 30 will protect you 10*30 = 300 minutes i.e. 5 hours
  2. Their effect often last less because we don't apply enough or wipe some off.
  3. The ideal sunscreen blends protection from UVA (aging), UVB (burning), Infra red (rosacea) and Blue light (melasma)