The Lash Lifecycle

Eyelashes are an important feature of the face, not only do they protect the eyes from dust and debris, but they also add to the overall aesthetic appeal. As with any hair on our bodies, eyelashes have a natural lifecycle, with phases of growth, transition, and shedding. Understanding this cycle is key to understanding how lash serums help nourish follicles, leading to longer and healthier lashes.

The Lash Lifecycle

The lash lifecycle is comprised of three phases: Anagen, Catagen, and Telogen.

  1. Anagen Phase: During this phase, the hair follicle actively grows, and the lashes lengthen. This phase lasts for 30 to 45 days and accounts for around 40% of the lash cycle.

  2. Catagen Phase: In this phase, the follicle becomes dormant, and the hair stops growing. This phase lasts for around two to three weeks and accounts for around 3% of the lash cycle.

  3. Telogen Phase: This is the resting phase where the lash is fully grown, and the hair follicle is inactive. During this phase, the lash is held in place, but it will eventually shed. This phase lasts for around 100 days and accounts for around 57% of the lash cycle.

Once the lash reaches the end of the Telogen phase, it will naturally shed, and a new lash will grow to replace it. The natural growth cycle of the lashes ensures that they remain healthy and strong, but certain factors such as age, stress, and medical conditions can disrupt this cycle, leading to thinner, shorter, and less healthy lashes.

How Lash Serums Help Nourish Follicles

Lash serums are formulated to nourish and strengthen the lashes, improving their overall health and appearance. These serums contain a blend of active ingredients, including vitamins, peptides, and natural oils, that work together to promote lash growth and protect the lashes from damage.

The key ingredient in most lash serums is a synthetic version of prostaglandin, a hormone that regulates the growth of hair follicles. This ingredient is known to promote lash growth by extending the Anagen phase of the lash lifecycle, allowing the lashes to grow longer and thicker. Other ingredients in lash serums, such as biotin and panthenol, help to strengthen the lashes and protect them from damage.

Lash serums should be applied daily to the base of the upper lash line, using the brush applicator provided with the product. It is important to follow the instructions provided by the manufacturer to ensure that the serum is applied correctly and safely.

Lash serums are not a quick fix and require consistent use over several weeks to see results. However, when used as directed, lash serums can significantly improve the appearance and health of the lashes, resulting in longer, fuller, and more beautiful lashes.


The natural lifecycle of lashes is important to understand in order to appreciate how lash serums work to nourish follicles. By promoting lash growth and protecting the lashes from damage, lash serums can help to improve the overall health and appearance of lashes. Consistent use over time can lead to longer, fuller, and more beautiful lashes.

Back to blog