Is there an explanation to why my eyebrows haven't held the pigment? I am 55.

Hello and thank you for your question.To have no color or strokes 4 weeks after microblading is not common at all, not at any age. The only time this happens is when the pigment is not placed to the upper dermis of the skin. Since your artist has been doing microblading for years this should not be the issue. Using retinol products and doing chemical peels and laser treatments too close to the brow can fade pigment.I would recommend following up with your artist to allow them to correct your brows.Best to you,