LED light therapy is a beauty technology that is gaining attention because it can help care for and restore damaged cells, stimulate collagen production under the skin, smooth the skin texture, reduce wrinkles, treat acne, and rejuvenate the skin to look younger. It is also convenient and safe, takes little time, does not cause wounds, and requires no downtime. After the treatment, you can go about your daily activities as usual.
LED light therapy for skin treatment is therefore another option for skincare. However, since LED light comes in various colors such as blue, green, yellow, and red, many people may wonder how each color differs, what benefits they offer, who they are suitable for, and there are likely many other questions that those interested in LED light therapy want to know. You can follow this article to find out.
Table of Contents for LED Light Therapy for Skin
- What is LED light therapy for skin?
- How many colors of LED light are there and what are the different properties of each color?
- Who is blue light suitable for?
- Who is green light suitable for?
- Who is yellow light suitable for?
- Who is red light suitable for?
- How is LED light skin treatment different from laser treatment?
- How many sessions are needed to see results?
- Preparation before and after LED light therapy
- What are the benefits of LED light skin therapy at Phyathai 3 Hospital?
What is LED light therapy for skin?
LED light therapy (Light-Emitting Diode) is a technology that helps care for the skin by using a sufficiently high light intensity measured in joules per square centimeter, and it must have a high brightness value (Millicandela Rating) to react with skin cells and stimulate the skin cell regeneration mechanism. The treatment uses various colors of light, each with different properties to treat different skin problems.
How many colors of LED light are there and what are the different properties of each color?
The commonly used LED light colors are four: blue, red, green, and yellow. In LED light skin therapy, either one or two colors of LED light can be used, depending on the doctor’s assessment of the individual’s skin problems and condition.
| Color | Wavelength | Properties |
| Blue light | 470 nanometers | Kills acne-causing P.Acne bacteria
Reduces inflammation |
| Green light | 525 nanometers | Treats various allergies
Reduces melanin production |
| Yellow light | 590 nanometers | Stimulates lymphatic circulation
Reduces melanin production |
| Red light | 640 nanometers | Stimulates collagen production
Reduces fine wrinkles |
Blue light
Blue light has properties that help treat acne and reduce inflammation, including inflammatory acne, steroid-induced acne, and allergy-related acne. It works by killing bacteria called P.Acne (Propionibacterium acnes), which causes acne, thereby reducing the chance of new acne formation. It also helps reduce sebaceous gland activity, leading to less oil production in the pores, which reduces oily skin and the formation of clogged pores.
- Suitable for people with a large number of inflammatory acne who do not want to take oral medication or those with acne that is difficult to treat due to drug resistance.
Green light
Green light has properties that treat dark spots by reducing melanin production and brightening the skin, similar to yellow light, but it is more commonly used to reduce dark spots. It also helps treat various allergic reactions.
- Suitable for people with dark spots, redness, scars, and dull skin.
Yellow light
Yellow light has properties that reduce melasma and freckles, decrease melanin production, brighten the skin, treat capillaries under the skin, and stimulate the lymphatic system and blood circulation.
- Suitable for people with melasma, freckles, dark spots, and dull skin.
Red light
Red light helps stimulate collagen and elastin production in the skin cells, which reduces fine wrinkles on the face, smooths and plumps the skin, and reduces skin inflammation. Doctors may recommend combining red LED light with blue light for acne treatment in cases involving acne extraction. Red LED light helps strengthen the skin in the treated area and prevents scarring.
- Suitable for those who want to rejuvenate their skin to look younger, strengthen the skin, and reduce new acne problems.
How is LED light skin treatment different from laser treatment?
LED light therapy and laser treatment differ in that LED light therapy is like a low-intensity laser, which is safe, causes no burning or pain, and does not burn or thin the skin.
Meanwhile, laser skin treatment uses high-energy light waves with precise focal points. Currently, there are various types of laser treatments suitable for different skin problems, such as improving skin texture, reducing dark spots, facial wrinkles, treating clogged acne, inflammatory acne, and acne scars. The number of sessions, frequency, and treatment results vary depending on each individual’s skin condition.
Because it uses high-intensity energy, side effects may occur, such as skin burning, pain, swelling, redness, irritation, peeling, and increased sun sensitivity. These symptoms usually resolve on their own but require time, depending on the laser depth and post-treatment care.
How many sessions are needed to see results?
The treatment results depend on the duration and consistency of the therapy. It is recommended to continue treatment for 4-8 weeks or more. The doctor will assess based on the individual’s skin problems and condition. Generally, results are seen after at least 3 continuous sessions. For example, in inflammatory acne cases, the acne gradually subsides, the face becomes less oily, and acne marks fade.
Preparation before and after LED light therapy
Before LED light therapy
3 days before the treatment
- Avoid using skin cell turnover medications such as Tretinoin (Retin-A), Retinols, Retinoids, Glycolic Acid, or anti-aging creams.
- Avoid waxing, exfoliating, scrubbing, facial massage, shaving, hair pulling, or laser treatment on the area to be treated for at least
24 hours before the treatment
- Avoid alcohol consumption and smoking.
- Avoid activities that increase blood circulation such as exercise and sauna.
If you have any underlying diseases, take regular medications, or have drug allergies, inform the doctor before receiving LED light skin therapy.
After LED light therapy
- Avoid sunlight and regularly apply sunscreen.
- Avoid sunbathing, sauna, and exposure to intense sunlight or heat.
- Use gentle facial cleansers or foams.
- Do not rub your face harshly to prevent skin irritation.
- Increase skin moisture with moisturizers.
- Avoid creams containing vitamin A, vitamin C, or AHA group creams.
What are the benefits of LED light skin therapy at Phyathai 3 Hospital?
- It is a private hospital with standards and credibility, operating for over 25 years.
- There is a team of experienced dermatologists available for consultation.
- Provides skin therapy with modern LED light technology, prioritizing safety.
- Accurately analyzes and assesses individual skin problems and conditions.
- Can precisely address individual problems with satisfactory results.
- Confidence in both results and safety when receiving LED light skin therapy at Phyathai 3 Hospital.
LED light therapy using different colors such as blue, green, yellow, and red has distinct properties to address various skin problems such as acne, dark spots, redness, scars, dull skin, melasma, freckles, and spots. It also stimulates collagen, reduces wrinkles, and rejuvenates the skin without causing harm. Results are clearly seen depending on the duration, consistency of treatment, and post-treatment care.
