Put a dropper into your hand and apply like aftershave all over the face or skin. Never use a cotton ball. The more you massage into your skin, the better it works. Use day and night or more
Tonics are alive, and must be shaken, kept out of direct sunlight and temperature fluctuations. Do NOT store in the bathroom. It should be used alone, not with further lotions. Try not to wear foundation when applying makeup, your skin won't be able to feed as well...
No, you leave it on
The tonics are all alive and should be kept out of the sun and in moderate temperatures. It should not be stored in the bathroom as temperatures fluctuate. Keep it out of the sun.
HINT: It will last even longer if you store it in the refrigerator!
No, you still can use both. The sunscreen should be used only when going outside. It is not waterproof. Check the "minutes to burn" with your weather channel and multiply that number by the approximated SPF of 20-30 to figure how to reapply. Say, 5 minutes x 20 = 100 min.