Hello,
With 1000's of satisfied customers, we absolutely belive that our collagen gummies make a difference in your hair, skin, and nails.
I hope this answers your question. Feel free to reach out directly to us if you have any more questions.
Thank you for contacting Lunakai and have a nice day.
Warmly,
Bella D.
Lunakai Customer Service Manager
Nashville, TN, USA