Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to use and choose a moustache wax [title] Decide what wax you want. [step] There are many varieties and sub-varieties. [substeps] You can find waxes that are: organic, petrochemical-free, tinted, soy free, or vegan, as well as traditional petrochemical varieties.

Ending1: [title] Choose suitable grade (length) of wax. [step] Grades are determined by the length of the mustache. Ending2: Look for wax that is derived from plants, in which case, opt for a wax that is made of real plants. Any product you use from unknown plants and sources should not be considered a moustache wax or traditional wax. Ending3: There are also some that are made from synthetic products which are not as effective as caseins and salt, which can encourage inflammation. These sorts of wax can be considered " oil', " which means it is not meant for the facial hair. Ending4: Waxes can also be purchased in different holding strengths: light/medium, medium, strong, or extra strong. [title] Consider three other factors when choosing your wax.

Answer format: ending1/ending2/ending3/ending4