Sun screens are necessary to prevent premature skin aging and prolong young and healthy looking skin. Many moisturizers are available with sun protection. So your daytime moisturizer can combine hydration/moisturizing with protection. Note: it is not recommended to wear sun screen at night.
Read further about Skin Care Basics
Step 1: Cleansing
Step 2: Toning
Step 3: Moisturizing
Step 4: Protection/Nutrition
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Daily Skin Care Routine
Make it a rule. That is when falling into a habit works for you!
To make the best of your daily skin care adjust it to your skin type.