Topical 5-aminolevulinic acid combined with intense pulsed light in the treatment of photoaging.
BACKGROUND
The adjunctive use of 5-aminolevulinic acid (5-ALA) with intense pulsed-light (IPL) treatments has been suggested to increase the benefit of IPL for photoaging; however, to our knowledge, no controlled trials have been performed.


METHODS
A prospective, randomized, controlled, split-face study was designed. Twenty subjects participated in a series of 3 split-face treatments 3 weeks apart in which half of the face was pretreated with 5-ALA followed by IPL treatment while the other half was treated with IPL alone. Two additional full-face treatments (with IPL alone) were then delivered 3 weeks apart. Assessment of global photodamage, fine lines, mottled pigmentation, tactile roughness, and sallowness (on a scale of 0-4) was performed by a blinded investigator before each treatment and 4 weeks after the final treatment. Patients also completed an assessment at the conclusion of the study comparing their results with pretreatment photographs.


RESULTS
All 20 volunteers completed the study. Pretreatment with 5-ALA resulted in more improvement in the global score for photoaging (16 [80%] subjects vs 9 [45%] subjects; P = .008) and mottled pigmentation (19 [95%] subjects vs 12 [60%] subjects; P = .008) than IPL treatment alone. More successful results were achieved on the side pretreated with 5-ALA compared with the side treated with IPL alone for fine lines (12 [60%] subjects vs 5 [25%] subjects; P = .008) and mottled pigmentation (17 [85%] subjects vs 4 [20%] subjects; P < .001). While there was noticeable improvement over baseline scores with respect to tactile roughness and sallowness, pretreatment with 5-ALA did not seem to enhance the results of the IPL treatment. The final investigator cosmetic evaluations (P=.0002) and subject satisfaction scores (P=.005) were significantly better for the 5-ALA-pretreated side. Both treatments were well tolerated, with little difference in the incidence or profile of adverse effects with or without 5-ALA pretreatment.


CONCLUSIONS
The adjunctive use of 5-ALA in the treatment of facial photoaging with IPL provides significantly greater improvement in global photodamage, mottled pigmentation, and fine lines than treatment with IPL alone, without a significant increase in adverse effects. This combination treatment enhances the results of photorejuvenation and improves patient satisfaction.
Dover
Jeffrey S
JS
Department of Dermatology, Yale University School of Medicine, New Haven, Conn, USA. jdover@skincarephysicians.net
Bhatia
Ashish C
AC
Stewart
Brigitte
B
Arndt
Kenneth A
KA
D000368:Aged; D000622:Aminolevulinic Acid / Q000009:adverse effects / Q000627:therapeutic use*; D004487:Edema / Q000473:pathology; D004890:Erythema / Q000473:pathology; D004954:Esthetics; D006801:Humans; D008875:Middle Aged; D017060:Patient Satisfaction; D010778:Photochemotherapy; D017319:Photosensitizing Agents / Q000009:adverse effects / Q000627:therapeutic use*; D011446:Prospective Studies; D016037:Single-Blind Method; D012867:Skin / Q000473:pathology; D015595:Skin Aging / Q000187:drug effects* / Q000473:pathology
D017319:Photosensitizing Agents; D000622:Aminolevulinic Acid