This iconic lash primer evenly separates and coats eyelashes with a nourishing, conditioning formula to maximize the results of your mascara. Infused with micro-fibers and vitamin E, this eyelash primer helps improve natural lash length, thickness, and curl over time for a false lash effect. This product is an Allure Best of Beauty award winner. Clinical Results: In a consumer test with a panel of 103 women using CILS BOOSTER and their regular mascara: - 93% saw more length - 92% saw more volume - 85% saw more curl Ingredient Callouts: Free of sulfates SLS and SLES, formaldehydes, formaldehyde-releasing agents, phthalates, mineral oil, retinyl palmitate, oxybenzone, coal tar, hydroquinone, triclosan, and triclocarban, and contains less than one percent of synthetic fragrances.
Last Updated: May 29, 2026
OLIVE YOUNG guarantees the highest quality of all our products. We do not sell damaged or used items. If you have received a damaged product, please contact our Customer Service Center as soon as possible.
You can click on the following links to go directly to the corresponding sections.
Cancellation Policy
Cancellation Process
How Shipping Fees are Refunded
| Type | Responsibility | Refund Policy |
|---|---|---|
| Full Cancellation | OLIVE YOUNG / Customer |
|
| Partial Cancellation | OLIVE YOUNG |
|
| Customer |
|
Return Policy
Return Process
Return Eligibility by Case
| Status | Responsibility | Reason for return |
|---|---|---|
| Eligible | OLIVE YOUNG |
|
| Customer |
| |
| Ineligible | - |
|
How Shipping Fees are Refunded
| Type | Responsibility | Refund Policy |
|---|---|---|
| Full Return | OLIVE YOUNG |
|
| Customer |
| |
| Partial Return | OLIVE YOUNG |
|
| Customer |
However, if the claim is due to our company's fault, the original shipping fee will be refunded to customers who paid it. |
Exchange Policy
Please contact OLIVE YOUNG for any further inquiries.

This iconic lash primer evenly separates and coats eyelashes with a nourishing, conditioning formula to maximize the results of your mascara. Infused with micro-fibers and vitamin E, this eyelash primer helps improve natural lash length, thickness, and curl over time for a false lash effect. This product is an Allure Best of Beauty award winner. Clinical Results: In a consumer test with a panel of 103 women using CILS BOOSTER and their regular mascara: - 93% saw more length - 92% saw more volume - 85% saw more curl Ingredient Callouts: Free of sulfates SLS and SLES, formaldehydes, formaldehyde-releasing agents, phthalates, mineral oil, retinyl palmitate, oxybenzone, coal tar, hydroquinone, triclosan, and triclocarban, and contains less than one percent of synthetic fragrances.
Last Updated: May 29, 2026
OLIVE YOUNG guarantees the highest quality of all our products. We do not sell damaged or used items. If you have received a damaged product, please contact our Customer Service Center as soon as possible.
You can click on the following links to go directly to the corresponding sections.
Cancellation Policy
Cancellation Process
How Shipping Fees are Refunded
| Type | Responsibility | Refund Policy |
|---|---|---|
| Full Cancellation | OLIVE YOUNG / Customer |
|
| Partial Cancellation | OLIVE YOUNG |
|
| Customer |
|
Return Policy
Return Process
Return Eligibility by Case
| Status | Responsibility | Reason for return |
|---|---|---|
| Eligible | OLIVE YOUNG |
|
| Customer |
| |
| Ineligible | - |
|
How Shipping Fees are Refunded
| Type | Responsibility | Refund Policy |
|---|---|---|
| Full Return | OLIVE YOUNG |
|
| Customer |
| |
| Partial Return | OLIVE YOUNG |
|
| Customer |
However, if the claim is due to our company's fault, the original shipping fee will be refunded to customers who paid it. |
Exchange Policy
Please contact OLIVE YOUNG for any further inquiries.
