Spectral.lash is an ophthalmologist-developed eyelash conditioning serum that supports the appearance of longer, visibly denser, thicker and fuller lashes. Formulated with unique key ingredients of the highest quality and proven efficacy. This formula has been encapsulated in the proprietary Advanced Nanosome Delivery System, which offers higher penetration for maximum results. The proprietary easy-to-use applicator dispenses a precise dosage to each lash, improving the bioavailability and avoiding cross-contamination. For best results, keep consistent. First and foremost, Ds Laboratories is a technology company aggressively focused on innovation. All their products have ingredients that ensure the best quality and provide high added value.