Study of the Use of Low Level Laser Therapy to Reduce Acne

Inclusion Criteria: * signed informed consent form. * male or female. * 18 to 40 years. * area sought for acne reduction is the face. * diagnosis of moderate or severe acne vulgaris, defined as grade 3-5 according to the grading criteria of acne severity given by Burton et al. * Acne has been ongoing for at least 3 months prior to screening and must include inflammatory lesions. * female using hormonal birth control must have been on a stable dose for at least 3 months prior to screening. * negative pregnancy test for female subjects, unless the female subject has been surgically sterilized. * sexually active female subject who is not surgically sterile or 2 years post menopausal must agree to use approved contraception/birth control measure while on study * PI (A normal healthy patient) or P2 (A patient with mild systemic disease) on the American Society of Anesthesiologists (ASA) Physical Status Classification System. * subject agrees to abstain from use of non-study treatments for acne while enrolled in the study. * subject agrees to abstain from use of tanning beds/sunbathing while partaking in the study. * subject agrees, and be able, to maintain regular medication schedule, as is medically feasible, during study participation. * subject agrees to not change skin care regimen throughout study participation. * subject is willing and able to comply with all requirements of the study protocol. Exclusion Criteria: * use of topical acne treatment within 15 days prior to start of study. * use of oral acne treatment within 30 days prior to the start of study. * use of oral isotretinoin or other systemic retinoids in the 12 months preceding the start of the study. * use of systemic steroids within 30 days prior to the start of the study. * pregnancy or currently nursing, or planning pregnancy during the course of the study * participation in any clinical study involving an investigational product within 30 days of the start of the study * use of tanning beds or sunbathing in the 30 days prior to the start of the study. * history of keloids or other photosensitive disorders or use of any photosensitizing medication. * currently taking any medication that may alleviate or exacerbate acne. * Porphyria or known allergies to porphyrins. * current signs or symptoms of severe, progressive, or uncontrolled renal, hepatic, hematologic, gastrointestinal, endocrine, pulmonary, cardiac, neurologic, or cerebral disease. * known malignancy or history of malignancy other than non-melanoma skin cancer * human immunodeficiency virus (HIV), hepatitis B or hepatitis C * signs of bacterial, fungal or viral skin lesions that may interfere with assessment of acne vulgaris. * known inherited or acquired coagulation defects. * substance abuse (drug or alcohol) problem within the previous 3 years. * developmental disability or cognitive impairment that may preclude study compliance. * unlikely to comply with the study protocol and procedure administration protocol, or is considered unsuitable for participation in the study for any other reason in the opinion of the investigator.