If you rub epsom salt into your hair, this is the effect

is not better here; overdoing any supplement can throw soil balance off, so keep it occasional and targeted.

Watering can, epsom salt, and tomato and pepper plants
Watering can, epsom salt, and tomato and pepper plants
17. Greener houseplants

For ordinary houseplants, a very diluted monthly solution is the gentler route. Magnesium can support leaf color when a plant is deficient, and a teaspoon per quart of water is plenty for a small boost without turning plant care into chemistry class.

Mix 1 teaspoon of Epsom salt into 1 quart