Scrape off any excess lipstick with dull knife, wiping the blade clean after each pass to avoid restaining the suede.
Apply a small amount of dry-cleaning solvent to the lipstick mark. Use a clean white cloth to blot the mark, using a fresh section of the cloth and additional solvent as the stain begins to transfer to the cloth. Repeat until the stain is gone or no longer absorbed onto the cloth.
Spray hairspray on any remaining stain and allow it to sit for approximately 10 minutes. Use a clean white cloth lightly moistened with warm water to wipe the dried hairspray and stain away.
Rub a brown art eraser lightly across the stain site to remove any residual oils and to freshen the suede nap.