It is generally recommended to apply sunscreen first, before applying any makeup. This is because sunscreen needs to be applied directly onto clean skin to be effective, and applying it over makeup may reduce its effectiveness.
To properly apply sunscreen, cleanse your face and then apply a generous amount of sunscreen to your face and neck, making sure to cover all exposed areas. Allow the sunscreen to fully absorb into your skin before applying any makeup. This usually takes around 10-15 minutes.
After the sunscreen has fully absorbed, you can then apply your makeup as desired. If you prefer, you can look for makeup products that already contain SPF for added sun protection. However, it is still important to apply sunscreen as the last step in your skincare routine to ensure that your skin is adequately protected from the sun's harmful rays.