Wellaholic Research: Evidence-based Review of Hair Removal Using Lasers & Light-Sources
Wellaholic Research: Evidence-based Review of Hair Removal Using Lasers & Light-Sources
Wellaholic conducts in-house research on hair removal as part of our efforts to keep current with the latest hair removal technologies and trends. We also examine case studies, research reports from various dermatological journals and medical journals. This helps us to improve our hair removal treatments to improve efficacy, safety as well as comfort for Wellaholic’s customers who choose us as their hair removal service provider.
In this 2006 study by M Haedersdal and HC Wulf, a total of 9 randomised controlled trials and 21 controlled trials were conducted using a variety of diode lasers (including SHR), alexandrite lasers, ruby lasers, Nd:YAG lasers and IPL. The study concluded that partial long-term hair removal was achieved beyond 6 months after repetitive treatments for all laser types, while evidence was lacking for long-term hair removal with IPL treatments. (source). Read on below to find out more.
Background of Research
Unwanted hair growth is a common issue faced by many individuals. It can occur due to a variety of reasons, including hormonal imbalances, certain medical conditions, or as a side effect of some medications. This unwanted hair growth can occur in various parts of the body and can cause significant distress, impacting a person’s self-esteem and quality of life.
Despite advances in medical and cosmetic technology, addressing unwanted hair growth remains a therapeutic challenge. Traditional methods of hair removal such as shaving, waxing, or plucking offer only temporary solutions and can be associated with discomfort, skin irritation, and the risk of infection.
Therefore, there is a considerable need for an effective and safe treatment modality for unwanted hair growth. The ideal treatment would provide long-lasting results, be suitable for all skin types, be cost-effective, and have minimal side effects. It should also be relatively painless and convenient, without requiring frequent maintenance treatments.
Objective of Study
From an evidence-based perspective, the goal is to objectively assess the performance and safety of these different technologies. These include the ruby laser, alexandrite laser, diode laser, and Nd:YAG laser. Each of these lasers operates at a different wavelength and has unique properties that make them suitable for specific applications and skin types.
- The ruby laser operates at a wavelength of 694 nm and is effective for light-skinned individuals with dark hair.
- The alexandrite laser, with a wavelength of 755 nm, is also suitable for individuals with light to olive skin tones.
- The diode laser, operating at 800-810 nm, is designed for fair to medium skin types.
- The Nd:YAG laser has the longest wavelength of 1064 nm and can be used safely on all skin types, including tanned and dark skin.
On the other hand, Intense Pulsed Light (IPL) is not a laser but a broad-spectrum light source. It’s versatile and can treat a range of skin conditions, including hair removal, but the results tend to be more variable.
Each of these methods has been studied for its effectiveness in hair removal and potential side effects. By summarizing this data, we can provide a comprehensive overview that can guide individuals and professionals in choosing the most suitable and safe hair removal method. It’s important to note that while these technologies can significantly reduce hair growth, none of them can guarantee complete and permanent hair removal, and multiple treatment sessions are usually required for optimal results.
Methods
In an effort to gather the most relevant and reliable data, original publications of controlled clinical trials were sought out. These are studies where participants are randomly assigned to one of two or more groups: the experimental group receiving the intervention that is being tested, and the control group receiving an alternative (often the standard treatment or a placebo). These publications were identified through a meticulous search of two highly respected databases: Medline and the Cochrane Library. Medline, a service of the U.S. National Library of Medicine, is one of the largest and most authoritative databases for biomedical literature, covering fields such as medicine, nursing, dentistry, veterinary medicine, and health care. The Cochrane Library, on the other hand, is a collection of databases known for its high-quality, independent evidence to inform healthcare decision-making. It includes the Cochrane Database of Systematic Reviews, Cochrane Central Register of Controlled Trials, and Cochrane Clinical Answers, among others.
Key Points
| Treatment Type | Immediate Post-Treatment | 3 Months Post-Treatment | 6 Months Post-Treatment |
|---|---|---|---|
| Ruby Laser | High initial reduction | Moderate reduction | Some regrowth observed |
| Alexandrite Laser | High initial reduction | Significant reduction | Minimal regrowth observed |
| Diode Laser | High initial reduction | Significant reduction | Minimal regrowth observed |
| Nd:YAG Laser | Moderate initial reduction | Moderate reduction | Some regrowth observed |
| Intense Pulsed Light (IPL) | High initial reduction | Moderate reduction | Noticeable regrowth observed |
Key Points:
- Immediate Post-Treatment: This column represents the immediate effectiveness of the treatment in reducing hair growth.
- 3 Months Post-Treatment: This column shows the effectiveness of the treatment in maintaining reduced hair growth three months after the treatment.
- 6 Months Post-Treatment: This column indicates the long-term effectiveness of the treatment, showing how much hair regrowth has occurred six months after the treatment.
Results and Conclusion
A total of 9 randomized controlled (RCTs) and 21 controlled trials (CTs) were identified. The best available evidence was found for the alexandrite (three RCTs, eight CTs) and diode (three RCTs, four CTs) lasers, followed by the ruby (two RCTs, six CTs) and Nd:YAG (two RCTs, four CTs) lasers, whereas limited evidence was available for IPL sources (one RCT, one CT). Based on the present best available evidence we conclude that (i) epilation with lasers and light sources induces a partial short-term hair reduction up to 6 months postoperatively, (ii) efficacy is improved when repeated treatments are given, (iii) efficacy is superior to conventional treatments (shaving, wax epilation, electrolysis), (iv) evidence exists for a partial long-term hair removal efficacy beyond 6 months postoperatively after repetitive treatments with alexandrite and diode lasers and probably after treatment with ruby and Nd:YAG lasers, whereas evidence is lacking for long-term hair removal after IPL treatment, (v) today there is no evidence for a complete and persistent hair removal efficacy, (vi) the occurrence of postoperative side-effects is reported low for all the laser systems.
The evidence from controlled clinical trials favours the use of lasers and light sources for removal of unwanted hair. The study recommend that patients are pre-operatively informed of the expected treatment outcome.
Frequently Asked Questions (FAQ)
What is the focus of Wellaholic’s evidence-based review on hair removal?
A: Wellaholic’s evidence-based review delves into the effectiveness of hair removal using lasers and light sources. It explores the various technologies, their benefits, and their suitability for different skin types.
How can I access Wellaholic’s research on laser and light-source hair removal?
A: You can easily access Wellaholic’s research by visiting their website and navigating to the dedicated page for the evidence-based review. The review provides in-depth insights into the science behind laser and light-source hair removal.
What are the advantages of laser and light-source hair removal methods discussed in the review?
A: Wellaholic’s review highlights the advantages of these methods, including precise targeting of hair follicles, long-lasting results, and the ability to cover larger treatment areas efficiently.
Does the review cover the suitability of these methods for different skin types?
A: Yes, the review discusses the suitability of laser and light-source hair removal for various skin types, including tanned and darker skin. It addresses concerns related to safety and effectiveness.
How do I know if laser or light-source hair removal is a safe option for me?
A: Wellaholic’s review discusses the safety aspects of these methods, but it’s best to consult with their experienced specialists. They can evaluate your skin type, medical history, and concerns to recommend the safest approach.
Serene Chiam, Aesthetic Director
Serene Chiam is the Aesthetic Director at Wellaholic, a well-known aesthetic chain in Singapore. She has more than ten years of experience in the aesthetics industry. With a Bachelor of Health Science (Aesthetics) and CIDESCO certifications, she expertly combines scientific knowledge with practical skills. Serene is known for her personalized approach to beauty, ensuring each Wellaholic client’s journey is unique and transformative. Her significant contributions have been pivotal in establishing Wellaholic’s reputation for excellence in aesthetic wellness.
Contact Serene at support@wellaholic.com
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