Seche Base Ridge-Filling Base Coat Professional Kitis specially formulated to enhance the performance of the worlds finest dry fast top coat, Seche Vite. Always use a base coat. This is the best way to get a good bond to the nail plate and to keep nail plate from getting stained by highly pigmented nail polish. When needed, use enclosed funner to refill from your 4oz bottle. Make sure the neck of your 4oz. professional size of Seche Base is properly cleaned, and the lid is screwed on tightly for storage.