How can I lighten my dark Microbladed eyebrows?

Within the first 72 hours after the treatment, you can try fading microblading with hydrogen peroxide. Make a paste-like concoction of baking soda and hydrogen peroxide, apply it to the brows, and rinse it off after a few minutes.

How long will my eyebrows be dark after microblading?

Healing will take up to 1-2 weeks, and it is perfectly normal for your treated eyebrows to scab. The scabs will fall off within a few days. It is normal for the color to appear darker and reddish in the first 5-6 days, and then to fade during the two weeks following the treatment.