Collagen is the largest and most abundant protein building block in our body -- which contributes directly to our skin’s firmness, suppleness, and elasticity.

Biotin is a B-complex vitamin that helps the body convert food into energy. Biotin occurs naturally in many foods, but using a supplement provides a higher dose of biotin to further support healthy hair, skin, and nails.

Zena™ Liquid Collagen + Biotin contains collagen types I and III.

Our collagen is sourced from bovine hides and is from grass-fed cattle. 

Type I collagen may help contribute to healthier hair, skin smoothness, and elasticity. Type III collagen may help stimulate the production of the amino acid glycine, a key building block.

We recommend taking Zena™ Liquid Collagen + Biotin continuously to see the best results. With any supplement, individual results may vary.

Serving Size is (10ml) or 2 teaspoons, once a day.

Once opened, please store in the refrigerator to preserve freshness.

Our premium Zena™ Liquid Collagen + Biotin formula contains only the highest quality collagen peptides from naturally occurring Bovine sources. Collagen is gluten-free.

If properly refrigerated, Zena™ Liquid Collagen + Biotin is good for 24 months. Please refer to the date at the bottom of the bottle.

We test every batch utilizing an independent, certified third-party lab.

We recommend talking with your healthcare professional first, as nutritional needs can vary when breastfeeding or expecting.

If your Zena product doesn't provide you with the results you were looking for, please return your unused bottle to the retailer you purchased it from. You will need to comply with that retailer's return policy.

If you purchased here, directly from us, we back our products with a 90 Day Money Back Guarantee. Refer to the Returns Policy at the bottom of this page for more information.