Here's a simple way to make rosemary water at home:

1. Gather Your Ingredients: You'll need fresh rosemary sprigs (about 2-3) and water (2 cups). If you don't have fresh rosemary, dried rosemary can also work.
2. Rinse the Rosemary: Rinse your rosemary sprigs under cold water to clean off any dirt or debris.
3. Boil the Water: Pour your water into a pot and bring it to a boil.
4. Add the Rosemary: Once the water is boiling, add the rosemary sprigs.
5. Simmer: Reduce the heat and let the rosemary simmer in the boiling water for about 15-20 minutes. This allows the rosemary oils to infuse into the water.
6. Cool and Strain: After simmering, remove the pot from the heat and let it cool down. Once it's cool, strain the mixture to remove the rosemary sprigs.
7. Store: Store your rosemary water in a clean glass jar or bottle. It can be kept in the refrigerator for up to a week.

Remember, if you're planning to use this rosemary water for your hair or scalp, always do a patch test first to ensure you don't have any adverse reactions. Simply apply a small amount to your skin and wait for at least 24 hours to see if any irritation occurs.