While you cannot reverse the chemical changes caused by a perm, you can certainly take steps to repair and maintain the health of your permed hair. Perming can lead to dryness, brittleness, and sometimes damage, especially if not done properly or if your hair is not cared for afterward. Here are some strategies to help repair and nourish your hair after perming:

1. Deep Conditioning: Regular deep conditioning treatments are crucial to restore moisture and protein to your hair. Look for products specifically formulated for chemically treated or damaged hair, and aim to deep condition at least once a week.
2. Moisturizing Products: Use a moisturizing shampoo and conditioner that are sulfate-free to avoid stripping away natural oils. Products with hydrating ingredients like argan oil, coconut oil, or shea butter can be especially beneficial.
3. Protein Treatments: Incorporate protein treatments into your routine to strengthen hair that may have been weakened by the perming process. Hydrolyzed proteins can help rebuild the hair shaft. Be cautious not to overdo protein treatments, as too much can make hair brittle.
4. Minimize Heat and Chemical Exposure: Give your hair a break from heat styling tools and additional chemical treatments like coloring for a while. This allows your hair to recover and minimizes further damage.
5. Gentle Handling: Treat your hair gently when washing, brushing, and styling. Use a wide-tooth comb or your fingers to detangle wet hair, and avoid rubbing your hair vigorously with a towel. Opt for a microfiber towel or an old t-shirt to gently blot excess moisture.
6. Trim Regularly: Get regular trims to remove split ends and prevent further damage from traveling up the hair shaft. This also helps maintain the shape of your perm.
7. Protective Styles: Consider protective styles like braids, buns, or twists to minimize manipulation and protect your ends from environmental stressors.
8. Healthy Diet and Hydration: Nourish your hair from the inside out by maintaining a balanced diet rich in vitamins and minerals essential for hair health, and drink plenty of water to stay hydrated.

Remember, patience is key. It can take time for your hair to regain its health and luster after a perm. Consistency in your hair care routine and giving your hair the necessary TLC can significantly improve its overall condition.