Nicotine presence can be detected in the blood for a short period only (about 48 hours) . However, its metabolite, cotinine, can be detected up to about three weeks from the last use and the cut-off detection levels is 200 ng/ml.
Q: What is the purpose of toner? Our skin is happiest at a pH of 5.5. Toner balances the pH of your skin. If you are acne prone the skin is too acidic. So finding a slightly alkaline toner can help balance the acidic nature. If the skin is dry, it is too alkaline, so finding a toner that has a lower pH can bring it to a happy balance of 5.5. Toning 1 minute after cleansing allows all the beneficial molecules to absorb into the skin as it is still wet.
Learn your ideal pH and how to maintain it. The body has numerous mechanisms in place to maintain pH within the range of 7.35 to 7.45 necessary to prevent serious health issues or death. However, the ideal pH of the human body is 7.365. The closer body pH is to the ideal value, the better you feel and the easier it is to maintain long-term health. Health Issues Arise When Ideal pH Is not Maintained. When pH drops below the ideal, the body experiences a more acidic environment. This leads to problems such as inflammation and narrowing of the arteries and corrosion of body tissue. Long-term acidic pH may lead to cancer, heart disease, or diabetes.