Wig & Hair Topper Scalp Part Pen

The voluminizing shampoo is great. The pencil is helpful, but I wish it provided a bit of smudge (subtle rooting). Is there a product that you could recommen I might buy else where, which I could use on my Darcy to achieve this effect? Would a powder that is used to cover scalp/ disguise thinness be an idea and safe to use on the topper? Thanks again

Love this! Makes my Topper part line look more realistic! 💕

Pen sucks doesn’t work and it doesn’t come out