Yes, you can work out after having nano brows, but it's recommended to wait at least 48-72 hours post-procedure before resuming any strenuous physical activity. This is because intense workouts can increase blood flow and induce sweating, which can potentially interfere with the healing process of the treated area.

Sweat contains salt and other impurities that can cause irritation, inflammation, or infection in the freshly treated area. Moreover, the increased blood flow can cause the pigment implanted during the procedure to fade or disperse unevenly, leading to less than optimal results.

After the initial 48-72 hours, it's still important to take some precautions. Make sure to clean your face properly before and after your workout to avoid any potential infection. Also, try to avoid direct sunlight and tanning beds, as UV radiation can cause the pigment to fade faster.

Remember, everyone's skin heals at different rates, so it's always best to consult with your aesthetician or dermatologist for personalized advice.