Formaldehyde is not an added ingredient in any NikkiLash adhesive.

Yes. NikkiLash adhesives are latex-free and waterproof. Clients with known sensitivities should always consult their lash professional and patch-test when appropriate.

Key ingredients include Ethyl Cyanoacrylate and Polymethyl Methacrylate, commonly used in professional eyelash extension adhesives.

For a full ingredient list or SDS/MSDS sheet, please email us at hello@nikkilash.com.

Replace your adhesive after 6 weeks once opened, or sooner if it becomes gummy, stringy, thick, or inconsistent. Adhesive naturally polymerizes over time after opening, which can reduce performance.

Yes. Unopened bottles may be frozen for up to 12 months. Before use, allow the bottle to sit at room temperature for at least 6 hours before your appointment.

NikkiLash adhesives perform best around 66°F–73°F with humidity around 40%–65%.

High heat, excessive moisture, or very dry air can affect adhesive consistency, curing speed, and retention.

Yes. We recommend using a protein remover or lash primer to clean natural lashes before application. This helps remove oils, proteins, makeup residue, and debris so the adhesive can bond more consistently.

Use the thinnest, most uniform coating possible. A small micro-dot at the base of the extension is usually enough.

Too much adhesive can cause blooming, stickies, excess weight, and a less clean finish. Too little adhesive can lead to poor attachment and premature shedding.

Shake well for 30–60 seconds before each use to help ensure consistent adhesive performance.

Lash extensions have not been formally tested during pregnancy. For clients who are pregnant or highly sensitive, many artists prefer a lower-fume or no-fume option such as BADASS SENSITIVE+™.

However, clients should consult their healthcare provider before service.

Retention depends on proper application, client aftercare, room conditions, adhesive freshness, and artist technique.

Poor retention is usually caused by one or more of the following:

• Humidity or temperature outside the recommended range during application
• Too much or too little adhesive applied
• Natural lashes not properly cleaned or primed before application
• Adhesive past its recommended opened-bottle life
• Oil-based products used by the client after application
• Adhesive not shaken properly before use
• Working too slowly, causing the adhesive to skin over before bonding
• Poor attachment or not enough contact at the base of the natural lash

Yes. NikkiLash ships worldwide where shipping service is available. If your country is not listed at checkout, please email us at hello@nikkilash.com and we will do our best to help.

Most orders ship within 1–2 business days, Monday through Friday, excluding weekends and holidays. Domestic U.S. delivery times vary by the shipping method selected at checkout.

Yes. We offer free standard shipping on U.S. orders over $100.

Standard USPS shipping is a good option for regular orders. For next-day or time-sensitive lash adhesive orders, we recommend selecting a UPS option at checkout for faster service and more reliable tracking.

Returns may be accepted within 15 days of delivery on unopened, unused products in their original condition. Please email us before sending anything back. Returns without prior authorization cannot be accepted.

Due to the professional and sanitary nature of lash adhesives, opened adhesive bottles cannot be returned or refunded.

NikkiLash is currently focused on retail orders for professional lash artists. We are not offering wholesale or bulk pricing at this time.