Uncovering the Reasons Behind Regrowth After Laser Hair Removal


Hair regrowth after laser treatment is not uncommon. But before you panic or get emotional, it is important to understand the reasons behind this.

Just a reminder: In every aesthetic procedure you avail, managing expectations is important.

This article aims to explore various factors contributing to regrowth and provide tips for addressing these issues.

Why is My Hair Growing Back After Laser?

Incomplete Treatment:

The primary reason why there is hair regrowth after laser treatment is that the initial treatment was incomplete or insufficient. Meaning there are missed spots, the settings are incorrect, or patients not adhering to treatment schedule.

Know the fact that laser hair removal is not a permanent solution, but a treatment that offers long-lasting effects. So instead of waxing, plucking, or shaving frequently, you don’t have to worry about hair regrowth that fast.

Incomplete treatment isn’t just the fault of the medical provider (though without training and certification, this could really be the case). Nonetheless, it is vital to follow the scheduled treatment plan and communicate with your expert provider to ensure the most efficient result.

Hormonal Changes:

Hormones play a significant role in hair growth. The changes in hormone levels are sometimes what causes hair to regrow even after laser hair removal. Therefore, patients with significant hormonal imbalances or with underlying medical conditions, like polycystic ovary syndrome (PCOS), may require multiple sessions or combination therapy for hair removal to be long-lasting.

Changes in Hair Growth Cycle:

Hair naturally grows in a cyclic manner (growing and shedding – repeat). Laser therapy targets the active growth phase. But, not all hairs are in this phase simultaneously. There are factors that affect or disrupt hair growth cycle like stress or illness.

Therefore, it is not new when hair regrows right after treatment. This is the reason why regular treatment sessions that follow a distinct schedule are recommended to cover hairs in different phases of growth.

Genetic Factors:

Your genes also play a role in the hair growth cycle. Thus, affecting the efficiency of laser treatment, as well. Some people are predisposed to fast hair regrowth, which is why hair can be noticed after treatment.

This is the reason why pretreatment evaluation is necessary. This is the avenue where you discuss family history, genetic predisposition, or other medical conditions that will help your medical provider to plan your treatment. The schedule will address even the genetic factors that come to play in hair regrowth.

Other Factors:

Medications, health conditions, and lifestyle factors can also impact hair growth. As such, it can also affect the effectiveness of laser treatment. It’s essential to inform your medical provider of any changes in your health or medications to ensure the best possible results. In turn, your medical provider can manage these factors appropriately.


Some may argue that hair regrowth is inevitable, making laser treatment a temporary solution. However, it’s essential to recognize that while complete inhibition of hair regrowth may not be possible, proper laser treatment can significantly reduce hair growth and lengthen the time between treatments, providing long-term benefits.


In conclusion, several factors contribute to hair regrowth after laser treatment, including incomplete treatments, hormonal changes, hair growth cycle disruptions, genetic factors, and other health and lifestyle influences.

By understanding and addressing these factors, individuals can maximize the effectiveness of their laser treatments. If regrowth is a concern, it’s essential to discuss these issues with your medical provider to ensure the best possible outcome.

If you are a medical professional, it is important to discuss all possibilities with your patients. You will learn theoretical knowledge through training, which Replenish MD Training can provide. We offer support even after you’re done with training and certification.

Leave a Reply