Lipstick stains often happen by (un)dressing or after huggings and kissings.
As they are generally red and thus very noticeable, removing lipstick stains is almost always necessary.
Soak the lipstick stain with warmed glycerine, rub.
You can also blot the stain (without spreading it) with a non-greasy makeup remover lotion.
You can also spread butter on the stain, then scrape. Scrub with barely moist natural soap to form a sort of crust, let stand for an hour, and then lather and rinse
You can also add a little water to some baking soda and then spread the paste on the stain. Scrub and rinse with warm water.