Spray liberally until the stain is saturated with hairspray, then blot with a damp cloth (do not rub).

剂量要充足，让发胶浸透污渍，然后用湿布轻轻沾几下(不是用力擦)。

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As far as tips for removers, try either vinegar or fabric softener with hot water in a spray bottle. Spray it liberally on your wallpaper and let it soak.

就小窍门儿而言，试一试用热水和着醋或是织物软化剂，然后用喷壶均匀喷其于壁纸表面，使之浸泡其中。

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