SOLOCARE AQUA from Menicon is a multipurpose solution for cleaning, disinfecting, rinsing, storing and moistening contact lenses. The modern humidification method helps contact lenses stay sufficiently hydrated throughout the day. With new, patented locking system. On some bottles the cap may feel loose but it won’t leak, and there’s no need to tighten it - in fact extra tightening can break the seal.