If you have ever wondered why removing facial hair seems to take longer than underarm hair removal, you are not alone. Many clients at Pulse Light Clinic ask this very question. Whether it’s the stubborn upper lip moustache, chin fuzz, or sideburns, it often feels like facial hair has a mind of its own. In this article, we are going to demystify the science behind it, explain why your face needs more sessions, and provide tips to make the process smoother and more effective.
Hair Growth Cycles Matter
One of the main reasons facial hair requires more sessions than underarm hair is the hair growth cycle. All hair grows in three phases:
Anagen Phase – This is the active growth stage, when the hair is attached to the root. Laser hair removal works best during this phase.
Catagen Phase – A short transitional phase where hair growth slows down and the follicle begins to shrink.
Telogen Phase – The resting phase when hair eventually falls out and the follicle is dormant.
Underarm hair tends to have a more uniform growth cycle. Most hairs are in the anagen phase at the same time, which means a few laser sessions can remove a large proportion of hair relatively quickly. Facial hair, on the other hand, grows in smaller, uneven clusters. Different hairs are in different stages at any given time. This means more sessions are needed to catch all the hairs during the anagen phase when the laser is most effective.
Hair Density and Thickness
Another factor is hair density and thickness. Facial hair, particularly around the upper lip and chin, can be finer than underarm hair but is often more deeply rooted. Some people have coarse facial hairs that grow back thicker if removed improperly. Underarm hair is generally coarser but grows in more predictable patterns, making it easier to target with laser.
Because lasers target the pigment in the hair follicle, darker and thicker hairs respond better to treatment. Fine facial hairs can be trickier because the laser needs a clear contrast between the hair and the skin. This is why a few underarm sessions can remove most of the hair, but facial hair needs more patience and precision.
Hormonal Influence
Hormones play a significant role in hair growth, and facial hair is particularly sensitive to them. Testosterone and other androgens can stimulate hair follicles, especially in women with conditions like polycystic ovary syndrome (PCOS). This hormonal influence means facial hair may continue to grow even after a few laser sessions.
Underarm hair is less affected by these hormonal fluctuations. While it still grows back over time, it is generally more predictable, so fewer sessions are needed for long-term reduction.
Skin Sensitivity
Facial skin is delicate and sensitive, which affects how laser sessions are planned. The laser energy must be adjusted to protect the skin and avoid irritation, redness, or pigmentation changes. Because of this, treatments are often gentler and require more sessions to achieve the same results as larger, less sensitive areas like underarms.
Smaller Area, More Precision
It may seem counterintuitive, but treating smaller areas like the face can take longer than larger areas such as underarms. Why? Precision. Each pass of the laser must be carefully applied to avoid overlapping or missing spots. Areas like the upper lip, chin, and jawline have contours that require careful technique.
Underarms, by contrast, are relatively flat and easy to access. The laser can cover more area quickly without compromising safety or effectiveness.
Consistency and Patience Are Key
If you are aiming for smooth, hair-free skin, consistency is critical. Facial hair will not disappear overnight. Most clients see noticeable reduction after 4 to 6 sessions, but full results often require 8 to 12 sessions or more. Underarm hair removal may only need 6 to 8 sessions because of the factors we mentioned earlier: uniform growth cycles, predictable density, and less hormonal influence.
Skipping appointments or treating too infrequently can slow progress, so sticking to your personalised treatment plan is the best way to see lasting results.
Aftercare Makes a Difference
How you care for your skin between sessions also affects results. Facial skin is exposed to more environmental factors like sun, makeup, and pollution. These can cause irritation or sensitivity after laser treatment, so protecting your skin with SPF, gentle cleansers, and moisturisers is essential.
Underarm skin is less exposed and less likely to react to environmental stress, so aftercare is usually simpler. Taking care of your skin ensures the laser can do its job effectively and reduces the number of sessions required.
Tips for Faster Facial Hair Reduction
Even though facial hair may take longer to remove, there are ways to optimise your results:
Follow the treatment schedule – Book sessions consistently according to your practitioner’s recommendations.
Shave before treatment – Laser targets the follicle beneath the skin, so surface hair should be shaved, not waxed or plucked.
Avoid sun exposure – Sunburned or tanned skin can make laser treatment less effective.
Maintain hormonal balance – If hormonal conditions are causing excessive facial hair, consult your GP for guidance.
Stay patient – Remember, achieving smooth facial skin is a marathon, not a sprint.
Why Pulse Light Clinic?
At Pulse Light Clinic, we use the latest laser technology, including Candela GentleMax Pro, to ensure safe and effective facial and underarm hair removal. Our practitioners assess your skin and hair type to customise your treatment plan, so you get the best results in the fewest sessions possible.
We understand that facial hair can be stubborn, and our approach balances effectiveness with gentle care. Many clients appreciate that our treatments are designed to fit into busy London lifestyles, with sessions ranging from 15 to 60 minutes depending on the area.
Fun Facts About Facial Hair
Let’s sprinkle in a few fun facts to lighten the mood:
Did you know that the average human face has around 5,000 hairs? That’s a lot of tiny targets for the laser.
Facial hair grows approximately 0.5mm per day, which may not sound like much, but over weeks it can feel like it’s rebelling against your efforts.
Laser hair removal was first developed in the 1990s and has evolved to safely treat all skin types, making stubborn facial hair a thing of the past for many.
Final Thoughts
With consistent sessions, proper aftercare, and expert guidance from Pulse Light Clinic, even the most stubborn facial hair can be effectively reduced. Whether you want smooth underarms or a hair-free face, our team is here to guide you through every step of the process.
Remember, hair removal is a journey, not a sprint. Celebrate the small victories along the way, and soon you will enjoy the confidence that comes with smooth, radiant skin.
