biotin lash serum

Most formulas list biotin plus supporting actives such as amino acids and peptides, panthenol, PDRN, castor oil, niacinamide (B3), and vitamin E.

Many product descriptions explicitly call out vegan and cruelty‑free formulations; some listings repeat both terms and label products as "cruelty‑free & vegan."

Descriptions range from lightweight, non‑sticky overnight treatments to clear serum gels; formulations are presented as liquid or gel textures that absorb without feeling heavy or greasy.

They come in both liquid and brush‑on formats; many listings mention a built‑in brush or a precise applicator designed to sweep along the lash line for targeted application.

Most listings recommend adult use (commonly 18+), though one listing notes 13+ for a different formula. Skin‑type notes range from "Recommended Skin Type: Normal" to "Suitable for most skin types," and several products reference ophthalmologist or dermatologist testing or recommend patch testing before first use.

Several listings describe oil‑free formulas and explicitly state they can be used with lash extensions and falsies. Check the product label or manufacturer guidance to confirm compatibility with your specific extensions.