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If you use a Prep or even wipe your nails with alcohol prior to applying your first layer of Pro Base it can cause hardening if the step is not entirely dry. If Pro Base comes in contact with excess powder it can cause the brush to harden, this is why it is crucial to wipe off the excess powder in between layers of ProBase and dipping the nail.If you are having trouble with the ProBase or Finish Gel brush hardening, there are two possible causes: If you do happen to get Finish Gel or Pro Base on the outside threading of your bottle, you can apply Brush Softener or Acetone to the area (making sure not to get any Brush Softener or Acetone inside the bottle), wait 3 minutes, then wipe the threading with a paper towel before closing the bottle. Please also note that Gel Thinner is a thinner version of these liquids and is still composed of a strong adhesive that will cause the lid to seal shut if left on the threading of the bottle or lid. To prevent this from happening in the future, be sure to watch our Liquids 101 video here: We then suggest you apply the brush softener to clean the threading, ensuring the brush softener does not get in the liquids as it will contaminate them, then wipe off. If this happens, you can wrap a non-slip jar opener around the lid or put a rubber band around the lid to get a better grip and open the bottle. You need to be careful to not get it on the neck of the bottle or it will glue the cap shut. Pro Base and Finish Gel are strong adhesives.
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