Biotrue® Multi-purpose Solution has a unique pH solution that matches your natural pH levels. It helps to keep your eyes lubricated by promoting tear protein activity. Biotrue® Multi-purpose Solution is a cleaner for contact lenses. While there are Biotrue® eye drops, this formula is not for direct in eye use. It would be best if you used a rewetting and lubricating eye drop to rewet contact lenses while they are in the eye. You can remove the contacts and use this multi-purpose solution to clean and rewet them before reinserting into the eye.