Sunlight is the source of all lives on earth, but sunlight is also the biggest cause of skin aging. The reason is that ultraviolet rays can damage the DNA of skin cells and cause mutations of genes. This in turn results in abnormal skin cells that produce more pigmentation and produce less collagen. The end results: more brown spots and more wrinkles on your face!
To avoid these awful problems, you should do everything to protect your skin from sunlight. The best thing to do is to stay indoors forever. I am just kidding. That’s not possible. Everyone needs to get out sometimes to have fun and to go to work. Luckily, we have many ways to protect our precious skin from sunlight: sunscreen, clothes, hats, and sunglasses.
Let’s start with sunscreens. I am sure most of you have used sunscreen before (at least I hope so). But here are a few important tips I want to remind everyone:
- No matter what type or what strength of sunscreen you use. Apply generous amount of it on your skin. To be more specific, I am going to use the term fingertip units. A fingertip unit is measured from the tip of your index finger to the first crease of your index finger. So for your whole face, you should apply at least 1 fingertip unit of sunscreen. You may apply more than 1 fingertip unit, but you should apply at least 1 fingertip unit to get enough sun protection. For the different body parts:
Face: 1 fingertip unit
Neck: 1 fingertip unit
One hand: 1 fingertip unit
One arm: 3 fingertip units
One foot: 2 fingertip units
One leg: 6 fingertip units
- Reapply sunscreen every 4 hours. If you sweat a lot, then you should reapply every 2 hours. For women with makeup on the face, you may use makeup with sunscreen to reapply.