In recent years, dermarollers have proven themselves an essential device in one’s beauty regime, who suffers from acne scarring, skin dullness, fine lines and stretch marks. However, lately, the device has gained traction due to its ability to reduce hair loss and equally contribute to hair growth, with scientific research backing to back phenomenon. Thus, it seems its not only your face which can benefit from this practice, your scalp can reap the rewards of the Dermarol also!
Studies have also shown, that no matter the cause of your hair loss, the derma roller is likely to work for you, whether you have alopecia areata, androgenic alopecia (AGA) or the most difficult case, called alopecia totalis. These genetic conditions are typically characterised by a receding hairline, or widows peak and thinning hair at the crown of the head, often progressing to partial or complete baldness. In recent years, clinical studies around androgenic alopecia have shown impressive results after derma rolling. This was proven to be true in a blind, randomised study on micro needling in alopecia patients in 2012. Over 12 weeks, 82 percent of participants, found a greater than 50 percent improvement in hair growth, thus proving the effectiveness of Dermarolling as a hair growth treatment.
Derma rolling over the scalp works as it does in other areas of the body, in which the needles create tiny insults and micro-injuries in its path, as it passes over the dermis causing micro-inflammation. It essentially triggers the body’s natural reaction, to initiate the wound healing process. In a similar way that the derma roller is used to stimulate collagen production in skin, it can be used to increase cell production and increase blood circulation around the scalp, which in turn will help with new hair growth.
To understand the efficacy and mechanics of derma rolling, it is important to understand the significance of collagen first. As the main component of connective tissue, collagen is the most abundant protein in mammals, making 25% to 35% of the whole-body protein content. Collagen molecule consists of amino acids wound together to form triple-helices. It is mostly found in fibrous tissues, such as tendons, ligaments and skin. The name collagen comes from the Greek κόλλα, denoting “glue”, and suffix -γέν, -gen, meaning “producing”, in short; glue producing.
Although minimally present in the hair shaft itself, collagen is present around the hair follicle bulb: supporting growth of new hair, it thickens around the root during the hair growth stage, anagen. The hair follicle losses a few layers of collagen when it enters the hair shedding stage, (catagen), thus additional collagen is key in promoting further growth.
Dermarolling will promote hair growth in two ways, in addition to stimulating greater collagen production in the scalp and in turn supporting the growth stage inside the hair follicle, the treatment also improves blood flow to the area. This is essential as a part of the wound healing process. When damaged, the epidermis reacts to the wound by sending more blood to the injury to heal the area and to aid in the nutrient dispersal to your hair follicles that they require to have sustainable and substantial hair growth. Scientists have also demonstrated more recently, the association between adult stem cells and hair follicle maintenance and proliferation. Within a hair follicle, stem cells should be present and active to become progenitor cells, which help the follicle to form hair. Thus micro-needling delivered by a derma roller, stimulates the production of stem cells that further contribute to a higher production of progenitor cells.