# BIYSBER 4-Peptide Lash Serum, 6 mL

BIYSBER lash serum combines peptides, biotin, hyaluronic acid, and botanical extracts in a daily lash-conditioning formula. It is applied along the upper lash line once daily with a precision brush, with the listing describing fuller-looking lashes after consistent use.

- [Original product page](https://best-deals.pro/product/biysber-4-peptide-lash-serum-6ml)
- [View offer](https://best-deals.pro/visit/biysber-4-peptide-lash-serum-6ml)
- Market: US
- Language: en-US
- Currency: USD
- Brand: BIYSBER
- Category: Beauty & Health > Skin Care
- Price: 19.99 USD
- Previous price: 76.99 USD
- Discount: 74%
- Price checked: 2026-11-13T05:28:24.179Z
- Rating: 5 / 5
- Reviews: 18

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- The listing describes a conditioning formula featuring peptides, biotin, hyaluronic acid, and nine botanical extracts.
- A 1.2 mm precision brush is intended to lay a thin layer along the upper lash line.
- The manufacturer claims visible-looking improvements in four weeks with consistent use. That is a product claim, not an independently verified result.

## Pros

- Once-daily application is a straightforward fit for a regular lash-care routine.
- The narrow brush is described as allowing controlled placement along the upper lash line.
- The formula is claimed to be vegan and without added hormones.

## Specifications

### Identity
- Brand: BIYSBER
### Dimensions and installation
- Dimensions listed: 0.5 x 0.5 x 3.5 inches; 0.8 ounces
### Formula and application
- Formula ingredients: multi-peptides, biotin, hyaluronic acid, and 9 botanical extracts
- Net contents: 6 mL / 0.2 fl oz
- Applicator brush size: 1.2mm
- Application frequency: once daily

## Before you buy

- The four-week results and 96% improvement statements are manufacturer claims, with no supporting study details provided here. Apply to clean, dry skin and let it dry fully before skincare or makeup. The formula is marketed for sensitive eyes and contact lens wearers, but individual tolerance is not established by the listing.

## A good fit for

- People seeking a once-daily lash-conditioning serum with peptide and botanical ingredients.
- Buyers who prefer a narrow brush applicator for upper lash-line placement.

## Less suited to

- Shoppers seeking independently substantiated growth results or detailed study information.
- Anyone who needs a product with a confirmed individual response or ingredient sensitivity profile.

## Customer feedback

The supplied material includes aggregate ratings but no written customer feedback. The rating distribution is entirely five-star, though the sample is small, so it offers limited insight into application experience, tolerance, or results. It does not verify the listing’s four-week improvement claims.

## Frequently asked questions

### How often should the serum be applied?
The listing instructs applying it once daily to clean, dry skin along the upper lash line. Let it dry completely before continuing with skincare or makeup.
### What ingredients does the listing identify?
It names multi-peptides, biotin, hyaluronic acid, and nine botanical extracts.
### Does the listing guarantee visible changes in four weeks?
No. Four weeks and the stated user-improvement percentage are manufacturer claims, not independently verified results.

## Alternative options

- [LiLash Purified Eyelash Serum for Longer & Fuller-Looking Lashes - Eyelash Enhancer, Safe for Use with Contacts, Lash Extensions, Sensitive Eyes - Vegan & Cruelty-free \(2mL, 90-Day Supply\)](https://best-deals.pro/visit/biysber-4-peptide-lash-serum-6ml)
- [PHIENEX Lash Serum for Eyelash Growth with W-Peptide & Botanical Blend, Eyelash Growth Serum for Fuller, Longer & Thicker-Looking Lashes, Vegan & Hormone-Free, Gentle for Sensitive Eyes \(Pink\)](https://best-deals.pro/visit/biysber-4-peptide-lash-serum-6ml)
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- [Denselume Lash Serum, Peptide Complex, Biotin & NAD+, Fuller Lashes, 6mL \| Lash-Peptide Technology with Biotin, NAD+, PDRN, Keratin & Collagen for fuller-looking, stronger-looking lashes.](https://best-deals.pro/visit/biysber-4-peptide-lash-serum-6ml)
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- [LiLash XL Eyelash Serum for Longer & Fuller-Looking Lashes - Eyelash Enhancer, Safe for Use with Contacts, Lash Extensions, Sensitive Eyes - Vegan & Cruelty-free \(4mL, 6-Month Supply\)](https://best-deals.pro/visit/biysber-4-peptide-lash-serum-6ml)
- [Obagi Nu-Cil Eyelash Enhancing Serum \| Nourishing Lash Serum with Biotin for Thicker & More Defined-Looking Lashes.](https://best-deals.pro/visit/biysber-4-peptide-lash-serum-6ml)
- [Lash Serum Eyelash Growth Serum - Multi-Peptide Lash Enhancing - Get Fuller,Longer,...](https://best-deals.pro/visit/biysber-4-peptide-lash-serum-6ml)
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## Add-ons

- [Biysber Advanced Eyelash Growth Serum with Peptide Complex & Botanicals, Lash Serum for Eyelash Growth to Boost Fuller, Thicker Lashes, Vegan Formula for Sensitive Eyes, 6 mL](https://best-deals.pro/visit/biysber-4-peptide-lash-serum-6ml)

## Images

![BIYSBER 4-Peptide Lash Serum, 6 mL — 1](https://best-deals.pro/i/u1Z-wNDqABeNNtzD68NSN6H6to5-q5FqCIfVAg0l8wD1-4RGC1RRpb-dilBZ45pY2OBRT8mDsZZx0-BN9nO4O0GbLFk4iuz96L6dhA_3jo7zZ1K0878E.jpg)

![BIYSBER 4-Peptide Lash Serum, 6 mL — 2](https://best-deals.pro/i/0PJS4MHk-iaujaMRTlp9ImnlZb-2Rqf9JGgz5FYm1x8YvpkDwPqGyn5GMTRrP14rY8TS56bvnGNw4H9fSFwUC9oQeH-nxtRDaxtKDQQkguiqIGxRcpTL.jpg)

![BIYSBER 4-Peptide Lash Serum, 6 mL — 3](https://best-deals.pro/i/098ubMpcS4SHoM8KCNf9743zclB8gJ8cZT_JnJcSLCo0ViInBsruwg-7eMPD5IDdldQKb3gTsSFL78UDNpb_AHE9sN4u2upQvS3jCvUqZi4d1jALhNLr.jpg)

![BIYSBER 4-Peptide Lash Serum, 6 mL — 4](https://best-deals.pro/i/toklS3Y-AqyCc0AVh9Jq96-H5A1sJhcD4Cm9LJ7EsOmzUrMiSYJgj3rpSBDDKznUCLnbkpNdfo9_VzBwqkRDM0soiFYsBoVTkY2PpHTq2gvK359V402k.jpg)

![BIYSBER 4-Peptide Lash Serum, 6 mL — 5](https://best-deals.pro/i/4Ha5vJXmj3sqVmUZXC6VSSpt9WBudymXXtPtV66ZTMYI7ymWN7C2uWZVvc2lAqgA1saIcqlJGSUpmhB38CDZDHxfUkQDd3O42gLXU675Qn4TrcIPqEZW.jpg)

![BIYSBER 4-Peptide Lash Serum, 6 mL — 6](https://best-deals.pro/i/KfJKT9hXpxpTNVNqtIxPmYombtAzkNy5Fg4UFNvOHmudez9cE73x1_4HwJJ9Efv8AOHoX8tcqXtp5PCckCWYzE8qIPg2AadI9ruCiYlfkbaCmg6K4qH8.jpg)

![BIYSBER 4-Peptide Lash Serum, 6 mL — 7](https://best-deals.pro/i/GtcXD8Au6Se2Rnc9_nk8VRldeml-mzAXFzAvHW7ALlVfnQRfvWTeQTzv4ZrruImYF3xS0ZgPG-vWQZIOscFUjiros5zRWA9-iRalUY_o-AWrWlunigpi.jpg)