The Pre-Seed patented formula was uniquely developed by a woman Sperm Physiologist to match fertile cervical mucus in pH, osmolality and viscosity, thus providing an optimal environment for sperm in women who are trying to conceive. Most lubricants harm sperm and should not be used while trying to conceive. Recent studies (see have reported that the Pre-Seed formula does not interfere with human sperm motility and DNA quality, or damage embryo development (in animal studies). Pre-Seed was the first ever fertility-friendly lubricant allowed to claim that it is "safe to use when trying to conceive", by the USFDA, following review and approval of the Pre-Seed safety studies.