Over time, your large black brush may harden.
The main reason is usually contact with a still-wet layer of Base Coat.
When dipping, make sure to wait about 3–4 seconds after applying the Base Coat and dipping into the powder before wiping off the excess powder with the brush.
This ensures that the Base Coat has enough time to bond with the powder and fully dry.
If the powder is removed too early, the still-wet liquid can stick to the brush and cause it to harden.
If only certain areas are affected, you can try trimming them carefully – otherwise, we recommend using a replacement brush.