(TrendHunter.com) Olaplex, a brand known for its expertise in hair care, just launched its first hair-adjacent product: a lash serum. The LASHBOND Building Serum has been in the works for about five years according... (TrendHunter.com) Olaplex, a brand known for its expertise in hair care, just launched its first hair-adjacent product: a lash serum. The LASHBOND Building Serum has been in the works for about five years according...