EcoLash Boost is another excellent clean lash serum toplash lash extension growth serum that promotes the growth of natural lashes. This serum stands out due to its sustainability efforts, as the brand uses eco-friendly packaging and sources organic ingredients. The serum contains biotin and plant extracts, which work synergistically to boost lash growth and improve lash thickness. The formula is also gentle on the eyes, making it suitable for contact lens wearers and those with sensitive eyes. Lash growth serums are specially formulated to promote the natural growth of eyelashes. They contain essential nutrients and conditioning agents that strengthen the lashes from their roots, making them appear longer, thicker, and fuller over time. The Best Lash Booster Serum stands out among its competitors for its powerful blend of natural ingredients, which effectively stimulate lash growth without any harmful side effects.