You can pair lash growth serums with eyelash extensions.

Lash growth serums work by essentially stimulating your eye lash hair follicles and keeping them in the anagen phase (the active/growth stage of the hair-growth cycle). Formulas usually contain nourishing and strengthening ingredients.

On average, it'll take anywhere from three weeks to two months for a lash growth serum to start working. It may technically start working sooner, but the growth will likely be too small to see with the naked eye until a bit later.

But bear in mind this isn't a once-in-a-while treatment, like a hair mask. You'll definitely have to use the product every day (potentially twice a day), as directed, to achieve the desired results.

Results usually differ depending on the individual, however, the growth is often noticeable after six weeks of regular, daily use. The growth also depends on the stage of “your lash growth cycle.” Our eyelashes and brows go through a cycle of around three months. This is why Eyelash & Eyebrow serums are advised to be used twice per day for 8-12 weeks to achieve best results - the same amount of time as a full growth cycle

Start by gently cleansing your eye area, removing all makeup, sunscreen, and other skincare residues. Gently pat your skin dry, and make sure it's entirely dry before beginning. Using the applicator wand, carefully glide the brush along your upper lash line to apply a thin layer of serum—almost like applying liquid eyeliner. Repeat the process on the lower lash line, and wait for the serum to dry completely before applying anything else.

If you were to stop using the serum/eyelash conditioner entirely, your lashes will likely return to their natural form. “If you discontinue using the product your lashes will continue to go through their natural growth and shedding phases and so the new lashes that come back in will be untreated and will appear the way they originally did”

Aside from the positive benefits, some users can experience redness or irritation, particularly if they are excessively using. Similar to many other beauty products with active ingredients, it's always better to tread carefully and do a patch test to observe how your skin reacts to your chosen eyelash serum. It is also important to follow instructions correctly and not to overuse the serum