In my experience, it's best to wait at least 4-6 weeks after a hair transplant before dyeing or cutting your hair. This allows enough time for the transplanted hair follicles to properly heal and settle into place. I would recommend consulting with your surgeon or hair transplant specialist for specific timing and guidance tailored to your individual case.
When it comes to dyeing your hair, make sure to use gentle, ammonia-free products to avoid any irritation or damage to the new follicles. As for cutting your hair, I found that a gradual approach worked best for me to avoid putting too much stress on the scalp. Overall, patience is key when it comes to caring for your transplanted hair to ensure the best results in the long run.