I have come to like how my strings sound with my fingernails scraping the strings while playing. But my index finger's nail is already getting scraped down and I'd like to keep it and my middle finger's nails longer to get a different tone from time to time. Anyone do anything actively to strengthen the nails and keep from getting them scraped away? I was thinking clear fingernail polish. I asked my mom for a bottle and she said she has a nail strengthening cream. But if any of y'all have some practical advice and or experience I'd appreciate the input.