Butter London gets an Excellent rating in the Yuka App. Excellent rating from me, too! I used to bite my nails and they were badly damaged. They are getting healthy. I’m feeling good! 😊 Easy to apply and bottle says it gives natural nails a healthy boost of Horsetail, an herb that is rich in nutrients and silica, proven to help your nails grow. I can attest to that! I’m also using the Butter Cuticle Exfoliator but I’m overdue on the cuticle treatment! @butterlondon