Depending on the type of microfiber your clothes are made from, you'll either machine wash or hand wash your garments. Look at your clothing's tag to determine the type of microfiber your clothing is made from. For example, bicomponent polyester-nylon can be machine washed. If the label doesn't indicate the type of microfiber, you can find instructions on the tag letting you know whether the garment should be hand washed or machine washed.
When machine washing microfiber, use warm water and mild detergent, following the guidelines on the detergent label to determine how much to use. Avoid washing with other fabrics such as terry cloth towels or cotton clothing because these items might produce a lot of lint that will cling to microfiber.
If you're unsure of the type of microfiber you've got, err on the side of caution and hand wash your clothes using warm water, mild detergent and a soft-bristle brush to work out any tough stains. Whatever you do, don't use fabric softener or detergents with fabric softener. Fabric softener will cover and clog the fibers' surface. Also, don't use dryer sheets or chlorine bleach.
Air drying will help your microfiber to last longer, and since microfiber dries very quickly, it's generally a win-win plan to avoid the dryer altogether. However, if you machine dry, use a low heat setting, and only dry with other microfiber products. As with washing your microfiber, never dry it with products that will produce a lot of lint, as lint will clog the fibers of your garment. There's no need to iron microfiber clothing because the material holds its shape very well. But if you must, use a cool iron and don't apply much pressure.