For the most part you should only be concerned about sanitizing products if you’re a professional makeup artist because you’ll be using the products on other people.

It is More Important to sanitize your brushes by washing them at least once a month (I personally would say once a week) with a little mild shampoo and lay flat to dry. A great way to prevent bacteria in your brush is to make sure you never blow air onto them because saliva partials will land on the brush.

Also Never use makeup sponges for long periods of time. You should replace them at least once a week. But switching to a makeup brush maybe more cost effective in the long run because they can be washed.

But you should also know that Bacteria has a hard time growing on a powder product, which means that you don’t need to sanitize it. You could wipe it with a dry tissue if you’re concerned. You could also sanitized the outer container with a tissue lightly saturated with 70% Alcohol

For Mascara, Liquid Liner and Lip Gloss you should never share it with anyone and should replace it every 2-3 months.

Lip Sticks can be sanitized by dipping into 70% Alcohol and wiping with a dry tissue.

Pencils can be sanitized by dipping into 70% Alcohol then Sharpen and again dipping into 70% Alcohol followed by wiping with a dry tissue.

Check to see if any of your products have an experation date and if you are not sure you can always take it to the company who made it because they make check the batch code to see when it was made. The best way to tell if a product has expired is it smell it- if it smells different or off of what you originally remember it smelling like it is no longer safe to use. Usually I find they start to smell like Halloween Makeup Tubes.

Let me know if yo have any other questions