Shampoo regularly. As becoming as they are, moustaches collect things and no matter how fine the food, it doesn’t belong in your Mo.
Moustache hair is coarse and benefits from regular conditioning. Massage your Mo with a dollop of conditioner then rinse thoroughly. It will make it softer to touch for both you and your intimate friends.
Use a hot face washer to steam and cleanse the skin under your moustache that can suffer from drying and itching.
For the modern gentleman, out of sight does not mean out of mind.