FJ......Lexie (and Olivia, from memory) had the same thing early on......I asked a hosp midwife about it and she said to leave it and that it would wash out by itself......and it has.....

DH now baths Lexie and asked me how to clean her bits and I just replied "Don't.....just swosh her round a bit....."

Although, if she has done a runny BF poo that ahas leaked up the front of her nappy, I do separate her lips a bit just to check she has no poo up her bits.....and if she has, I'll wipe it with warm water & cotton wool.....but I don't dig too deep IYKWIM?