Study of the Effect of Low Level Laser Light on Hair Growth on the Female Human Scalp

Over 20 million women in the United States suffer from hair loss, and about 40% of those
women are under forty years of age. The emotional aspects of hair loss for females include
anxiety and depression, frustration and poor self-esteem. Androgenetic alopecia is a common
cause of female balding and the most likely reason for excessive hair loss.

It is believed that light therapy of the scalp will provide an effective means to reduce
hair loss and/or stimulate hair growth in females with androgenetic alopecia. Results of
previous studies on low level laser therapy (LLLT) have demonstrated a variety of in vitro
and in vivo effects including increased blood flow, accelerated wound healing, enhanced
production of cytokines and other cellular mediators, increased cellular proliferation,
among a panoply of other effects. Enhanced hair growth has been observed adjacent to treated
areas in various animal models investigating the effects of LLLT. Uncontrolled studies in
humans and spa-based therapies in Europe appear to show that the periodic application of low
intensity light therapy reduces hair loss and appears to increase hair growth. The majority
of these applications utilize light in the red and near-infrared portions of the spectrum.

The Erchonia MLS low level laser is being evaluated for its potential to improve the quality
and quantity of hair on the female scalp. This may improve the quality of life as a result
of improved self-image and may potentially delay or reduce the need for surgical procedures
such as hair transplantation. A successful local therapy would mitigate or reduce the need
for systemic agents such as minoxidil and finasteride, thereby minimizing the potential side
effects of these therapies.

Inclusion Criteria:

- Female pattern androgenic alopecia defined as:

- discernable decrease in hair density on the top of the scalp relative to the
sides and back of the scalp (ii) classifications I-3, I-4, II-1, II-2 according
to the Ludwig and Savin Hair Loss Scale

- Notable hair loss/thinning onset within the past five years.

- Progressive/active hair loss/thinning within the last 12 months.

- Skin type I through IV according to the Fitzpatrick Skin Type Scale.

- Healthy, balanced scalp, determined as one that shows no indication of notable:
dryness, flaking, dandruff (pityriasis), redness, irritation, inflammation, itching,
greasy/oily texture, odor, lesions, scalp acne or other significant dermatological
conditions.

- PI or P2 on the American Society of Anesthesiologists (ASA) Physical Status
Classification System.

- Willing and able to maintain same hair style, length, color and hair care regimen
throughout study participation.

Exclusion Criteria:

- Hair loss attributable to one or more of the following conditions: tinea capsitis,
secondary syphilis, discoid lupus erythematosus: Inflammation, alopecia areata,
trichotillomania, telogen effluvium, anagen effluvium, traumatic alopecia.

- Use of any of the following medications presently or during the prior 6 months:
minoxidil, finasteride (or any other 5ᾳ-reductase inhibitor medications),medication
with anti-androgenic properties (e.g. cyproterone, spironolactone, ketoconazole,
flutamide and bicalutamide),topical estrogens, progesterone, tamoxifen, anabolic
steroids, medications that can potentially cause hypertrichosis (e.g. ciclosporin,
diazoxide, phenytoin and psoralens), oral glucocorticoids (inhaled glucocorticoids
permitted), lithium, phenothiazines.

- Current use of other prescription and/or over-the-counter products known to affect
hair growth and distribution (e.g. saw palmetto, fish oil, corticosteroids,
antineoplastic agents, beta blockers, diazoxide, heparin, verapamil, warfarin, etc.).

- Medical, physical, or other contraindications for, or sensitivity to, light therapy
(e.g. porphyria, photosensitizing drug therapies).

- Taking Hormonal Replacement Therapy.

- Conditions that may worsen with light therapy.

- History of poor wound healing.

- History of keloid formation.

- Prior hair restoration/transplantation surgery.

- Prior scalp reduction procedure(s).

- Other surgery to the scalp region (e.g. to remove a skin cancer lesion).

- Active skin infection, wound, or other external trauma to the scalp evaluation area.

- Active malignancy or any malignancy in the past five years in the scalp evaluation
area.

- Dermatological condition (dermatitis, eczema, psoriasis, etc.) of the scalp other
than female pattern hair loss.

- Significant scarring (e.g. from burns) in the scalp evaluation area.

- History of thyroid condition that may influence hair growth and loss.

- Underlying medical condition(s) known to adversely affect hair growth or hair
pattern, such as HIV, connective tissue disease, inflammatory bowel disease.

- Current hair weaves.

- Use of non-breathable wigs.

- Hairstyle is a "buzz" cut, defined as hair cut to less than one inch in length.

- Tattooing of the scalp target evaluation area.

- Subject is pregnant, nursing, planning a pregnancy, or less than six months
postpartum.

- Serious mental health illness such as dementia or schizophrenia; psychiatric
hospitalization in the past two years.

- Developmental disability or cognitive impairment that would preclude adequate
comprehension of the informed consent form and/or ability to record study
measurements.

- Involvement in litigation/receiving disability benefits related in any way to the
parameters of the study.

- Participation in research in the past 30 days.