To function properly skin rely heavily on water. Water composes 50 to 70 percent of the body weight. Drinking pure water is essential to keep skin healthy. The amount of water needed by an individual varies, depending on body weight and level of daily physical activity.
Here is an easy formula to help you determine how much water is needed every day for maximum physical health.
( BODY WEIGHT / 2 ) / 8 = CUPS
Take your body weight and divided by 2. Divide thus number by 8. The resulting number approximates how many 8-once cups of water you should drink every day.
If you weight 120 pounds 120 / 2 = 60 60 / 8 = 8
You should drink at least 8 cups of water every day
If you engage in intense physical activity each day, add two extra glasses of water to the final number. Drinking excess amount of water is not recommended, so increase the amount only if you thirsty or dehydrated.
Milady`s Standard Esthetics fundamentals, 10th edition
There are 2 types of sunscreen ingredients: chemicals and physical. Chemical sunscreens absorb ultraviolet rays. Physical - reflect ultraviolet rays.
Examples of physical:
- titanium dioxide
- zinc oxide.
Example of chemical sunscreens:
If you need a really good sunscreen do not look at the brand or price, read ingredients and choose the one that has both chemical and physical ingredients.
USA Federal Food and Drug Administration regulations do not allow to use term SUNBLOCK.
Because NO products blocks 100 % of UVA and UVB rays.