For many beauty enthusiasts, excessive body hair can sometimes affect personal appearance, especially in the more exposed areas such as arms, calves, and armpits. The body hair in these areas is not harmful to human function, so it can be selectively removed. Currently, the most commonly used hair removal method is laser hair removal. Do you know the relevant knowledge of laser hair removal?

How does laser hair removal work?

Laser hair removal is currently the most commonly used and effective way of hair removal, it is based on the principle of selective photothermal action, the use of laser photothermal effect, acting on the skin deep hair follicle melanin, the hair follicle in the absorption of laser energy after the temperature rises sharply, so that the hair follicle heat shrink, thus losing the ability to regenerate, to achieve the effect of hair removal.

What is the newest hair removal technology?

Freezing point hair removal and photon hair removal are currently the most advanced permanent hair removal methods. Based on the principle of selective thermodynamic action, laser or intense pulsed light is accurately released to penetrate the skin surface and finally be absorbed by the hair follicle, causing the hair follicle to be heated to produce photothermal effect, thus destroying the hair follicle papilla and achieving the effect of hair no longer growing. But it’s not permanent. Therefore, it can cool and painlessly remove excess hair in a large area, and effectively protect the surrounding skin, while shrinking the pores, and do not damage the skin and sweat glands.

Freezing point hair removal is a popular saying, the so-called freezing point actually refers to the hair removal instrument on the contact with the skin probe is relatively cool and painless, the main role is to relieve the pain of the skin in the process of hair removal. At present, there are actually two categories of instruments, namely IPl photon freezing point hair removal instrument, 808 diode laser freezing point hair removal instrument, the principle of hair removal is the same, that is, through light and heat to destroy the hair follicle, to achieve the role of hair removal.

What is the longest lasting hair removal method?

Hair removal is an important topic in many women’s lives.However, there are so many ways to remove hair, why is laser hair removal so popular? What are the advantages and disadvantages of common hair removal methods? Today, I will tell you about hair removal.

Comparison of common hair removal methods:

Shaving with a hair removal knife
Advantages: Easy to operate, economical.
Disadvantages: Only the surface hair is shaved each time, so the maintenance time is short. The new hair is rough and hard.
Pain: ★ Duration: ★

Waxing
Advantages: The maintenance time is longer, can be maintained for half a month to a month.
Disadvantages: In essence, it is forced to remove the hair through physical tearing, and the pain is strong, easy to stimulate the skin, and even cause folliculitis.
Pain: ★★★★★ Duration: ★★

Hair removal cream
Advantages: relatively clean removal and low pain sensation.
Disadvantages: Irritable to the skin, prone to allergies and inflammation.
Pain sensation: ★ Duration: ★★

Many people may wonder if there is a hair removal method that has advantages in both pain and durability when they see this? of course!

Laser hair removal
Advantages: High safety, more long-lasting effects, and even long-lasting effects can be achieved after multiple repeated treatments.
Disadvantages: Slightly painful, relatively high price.
Pain sensation:★★ Duration: ★★★★★★

Laser hair removal is fast becoming one of the most popular hair removal treatments for both men and women worldwide. Reasons for the increase in popularity include the speed and convenience of laser hair removal, as well as the lower level of pain experienced by patients compared to other  hair removal methods.

Compared to waxes, hair removal knives, and hair removal creams, lasers can treat a larger area of skin with less discomfort. In fact, studies have shown that laser hair removal is about 60 times faster, less painful and more reliable than the electrolysis method tested (although there have been recent improvements in electrolysis). Still, laser hair removal is not entirely without pain or discomfort.

The discomfort associated with laser hair removal varies – similar to the sensation of a rubber band bouncing on the skin + plus the heat generated by the laser. The level of discomfort experienced depends on the person’s skin type, the laser used, the part of the body being treated, the hair density, the thickness of the hair, and their pain threshold level. The most uncomfortable is usually during the first session, as this is when the hair density is at its peak. In addition, some parts of the body are more sensitive than others, and it is recommended that people with sensitive skin or a low pain threshold use a local anesthetic before treatment. This will reduce any pain or discomfort.

Is there a permanent hair removal?

Laser hair removal can generally achieve the effect of permanent hair removal, laser hair removal is mainly to destroy the growth of the hair follicle, so that it loses the ability to regenerate, however, the growth of hair has a cyclical, including growth, degeneration, resting period, laser on resting period of hair and no removal effect, only hair in the growth period, laser can work. Therefore, laser hair removal requires multiple treatments to achieve a more ideal hair removal effect. Generally speaking, after 3-5 treatments, the amount of hair in the treated area will be significantly reduced, and even if there is a small amount of residual hair, it will be relatively soft and very light in color, and the final effect is usually very satisfactory.

There are three cycles of hair growth, namely growth, regression and rest. The activity of melanocytes in hair follicles decreased and the synthesis of melanin was less in the retrograde and resting stages. The melanocytes of hair follicles in the growth phase are active and have more melanin synthesis.

Hair follicles in the growth phase respond better to treatment, and hair in the degenerative and resting period should wait for its growth phase before hair removal to achieve the best hair removal effect.

After a full course of laser hair removal, the hair that regrows is thinner, lighter, and less numerous, and is not visually noticeable. It can be defined as “permanent” hair removal. Because the growth of hair is cyclical, only the growth period of hair melanin content is high, the hair removal effect is better. The content of melanin in hair follicles in the degenerative and quiescent stages is low, and the effect of hair removal is poor. Therefore, it is usually recommended that 3-5 laser hair removal results are better.

There are various wavelengths of laser hair removal: 755nm, 808nm, 1064nm, 940nm and so on.

How many sessions for diode laser hair removal?

Due to uneven hair growth, each batch of hair entering the growth phase requires multiple treatments. In addition to the scalp, hairs that are actively growing during the growth phase account for 20-40% of the total number of hairs in specific areas of the body. As a result, multiple treatments are required.

These sessions are spaced out accordingly to allow the hair cycle to enter an active growth phase, thus making the treatment successful.

The number of treatments a patient needs depends on hair color, skin pigmentation, hair texture, hair density, hormonal status (hormonal changes will trigger hair regeneration) and other factors, fine hair absorbs less heat than coarse hair, so the treatment is less effective and requires more courses of treatment.

Darker hair has more melanin to absorb energy, so treatment is more effective and requires fewer sessions. Dark skin contains more melanin, so the hair removal laser can’t focus on an area for as long as light skin, so as not to cause damage. This may require more treatment.

Treating facial hair requires more frequent sessions than treating other parts of the body because the length of the hair growth cycle is much shorter than other parts.

Typically, facial treatments are spaced about 5 weeks apart, while leg and back treatments are spaced 8-10 weeks apart.

During treatment, the hair in the target area becomes less dense after each subsequent session. Upon completion of the treatment, patients will find that as much as 70-90% of the hair has been permanently removed, and the recovered hair is softer and brighter. In order to maintain the treated areas and make them completely hairless, further treatment is always required.

However, after multiple sessions of laser hair removal, these additional treatments are only needed once a year, or even less frequently. The frequency of follow-up treatment depends entirely on the patient and the area being treated.

Diode laser hair removal at home

The number and frequency of treatments can make comprehensive laser hair removal expensive, which has led to an increase in home laser devices on the market.

Home laser hair removal is less expensive than professional complete hair removal treatment options and offers patients more privacy. However, home laser hair removal is not without its drawbacks. For example, most devices on the market are smaller than professional lasers and, therefore, target smaller areas of skin. This means that more time and treatments are needed to successfully remove hair completely.