It is best to throw away any products that you have had longer the 6 months to a year. They will go bad after that and can irritate your skin with bacteria. Smell them, if it smells fresh and clean, your good. If it has a funny smell, toss it.You will need different products in winter then you used in summer. You will need much more moisture in cold months. So up your program for he cold months. Please contact leif you have any questions.