How can i keep track of my inventory without any bar codes?

I have a small makeup stand in a salon and my makeup doesn't have any barcodes to keep track of, what is the best way to keep track of my inventory without over complicating it. Cause I have to think of color and type (ex cream concealer and liquid concealer, or duo powder and translucent powder...) I know... show more I have a small makeup stand in a salon and my makeup doesn't have any barcodes to keep track of, what is the best way to keep track of my inventory without over complicating it. Cause I have to think of color and type (ex cream concealer and liquid concealer, or duo powder and translucent powder...) I know excel is the best way but i don't have a computer, only my iphone and i have to make sure no one takes anything since im not always there.