Hi Ginger, it sounds like you might not be covering your starter sufficiently so it's drying out and forming a skin. Try placing a lid slightly ajar even if the starter is kept in a proof box. Otherwise, it sounds like you're right on track to building a beautiful and healthy starter. Check out our full Sourdough Baking Guide for visual examples (amazing videos!) of what your starter should look like when it's ready to bake. Good luck! Kye@KAF

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