Red light therapy (RLT) to face skin issues by using low wavelength red light to solve skin problems. Many experts believe that it can exactly help improve skin conditions, scars, and signs of aging, including wrinkles and age spots.

The following is a list of red light functions for your reference.

1. Improving skin health

2. Improving acne

3. Wound healing

4. Hair grows

1. Improving skin health

As a study in the journal Seminars in Cutaneous Medicine and Surgery points, the mitochondria of the cells in the skin could absorb these light particles, which is helpful for cells to produce more adenosine triphosphate, and that is the energy source for cells. Many experts attribute the positive benefits of RLT to this function.  

Many studies have shown that this treatment is promising, but more extensive human clinical studies will help to identify potential applications of RLT.

The potential of using RLT as a method of rejuvenating the skin has attracted a lot of research.RLT may help the skin to rejuvenate by:

· Improve facial texture and reduce fine lines

· Reduce the severity of wrinkles

· Protect cells from damage

· Increase mRNA in cells, which helps stimulate cells

· Increase the production of collagen in the skin and make the skin elastic

· Increase the production of fibroblasts, which contribute to the production of collagen and other tissue fibers

· Increase blood circulation and circulation between tissue cells

Collagen is a kind of long-chain amino acid, which is the most abundant protein in the human body. It's responsible for giving skin elasticity, empowering hair, and keeping connective tissue in order. In fact, collagen accounts for 30% of the body's total protein and 70% of the skin.

All organisms need to make ATP cells work and survive. Almost all organisms rely on natural light to drive the process of our cells every day. The red and near-infrared wavelengths of natural light stimulate mitochondria in cells, which are responsible for absorbing light, oxygen, and the food we eat, and converting them into energy available to our body through cell respiration.

Red light therapy can restore healthy cell function and stimulate collagen production, which is why so many people experience the skin and anti-aging effects of red light therapy.

2.Improving acne

Red light therapy reduces acute and chronic inflammation by increasing blood flow to damaged tissues, and it has been found in many clinical trials that red light therapy can enhance the body's antioxidant capacity. The natural anti-inflammatory effect of this red light therapy, revealed in one study after another, is the key to rejuvenating the skin and improving the appearance.

As the review in Seminars in Cutaneous Medicine and Surgery also notes, phototherapy is a potential option for the treatment of acne vulgaris.

Sunlight can change the behave of the sebaceous glands. Sebaceous glands produce sebum, which can clog pores and cause acne. Red light can help relieve overactive glands.

The problem that many people have with sunlight exposure is that it comes with exposure to strong UVA and UVB rays, which can lead to other skin problems as time went by. It could be severe and may include developing skin cancer.

Whether used alone or in combination with other treatments such as blue light, RLT is a potentially effective treatment for acne vulgaris. Light can penetrate the skin, affecting skin secretion and reducing inflammation and irritation in the area.

3.Wound healing

Light therapy has been shown to accelerate tissue repair, decrease wound size, and accelerate wound closure as well as other beneficial effects.

 These mechanisms have been demonstrated to promote dermal wound healing as well as reduce the pain associated with the healing process. RLT is intended to be used for dermal wound healing referring to the treatment of surface wounds existing at the outer 2mm of the skin and including normal, acute post-surgical and chronic wound healing including but not limited to diabetic ulcers

Research from the journal Anais Brasileiros de Dermatologia highlights the fact that light therapy can help heal wounds in several ways, as follow:

· increasing helpful fibroblasts in the skin

· increasing collagen production in the skin

· reducing inflammation in the cells

· stimulating new blood vessels to form, which doctors call angiogenesis

4.Hair growth

High quality LED phototherapy equipment can provide your skin with a safe concentrated wavelength of natural light without producing chemicals, ultraviolet rays, or excessive heat. These red and near-infrared wavelengths of light, similar to natural sunlight, stimulate mitochondria in cells, reduce oxidative stress, and increase circulation, so your body can generate more core energy to power itself.

RLT makes energy more effectively throughout the body, improves body function, accelerates healing, and reduces inflammation and pain. Dermal papilla cells play an important role in regulating hair circulation and growth

A study published in the Journal of Cosmetic and Laser Therapy explored the effect of low-level light on people with alopecia.

The study found that people who received RLT had improved hair density compared to those in a control group.

The authors note that the effect was beneficial when people applied light in wavelengths of 665 nanometers (nm) and 808 nm.