Question I keep my cleansing puff in the shower. Does it matter if it never fully dries out between uses? Answer Yes. Moisture that lingers in a puff can be a breeding ground for bacteria. So after rinsing it, let it dry completely by taking it out of the shower and hanging it on a hook. Or, if you are …
Question How often do I need to wash my makeup brushes? Answer Once a month is fine. Dip the brush in warm, soapy water—use shampoo or a mild bar soap. Rinse it, blot the brush with a clean towel, then use a blow-dryer to dry the bristles gently.
Question I add water to my shampoo to make it last longer. Will it clean as well? Answer If it’s a concentrated shampoo that really lathers up (and takes a lot of water to rinse out), there’s no harm in adding water, says New York City dermatologist Doris Day. A nonsudsy shampoo could become too watered down to remove oils.
Question Some creams come with a thin plastic lid under the cover. Should I keep it or toss it? Answer Keep it. Exposure to light and air breaks down many active ingredients, including vitamin C and retinol, making them inert. Also, store these products in a cool, dark place to help maintain their efficacy.