I just stained my deck using TWP 1500 after using the Gemini restore kit (cleaner/brightener). I missed a section of the deck when I did the brightener phase and didn't realize it until after staining because the wood is darker in this section. Can I still use the brightener in that spot AFTER staining? If so, will it harm the stain and will it brighten the wood?
Sorry but that is not possible to brighten after the staining. You would need to strip and start over.