BROAD-SPECTRUM SUNSCREENS 137 Figure 2. 10 MPD: Elastic fibers. Luna's stain (magnification X 370). A: SPF-7 sunscreen. Elastic fibers are hyperplastic and thickened. Mast cells are focally increased ( •- ). B: SPF-16 sunscreen. Hyperplasia of thickened elastic fibers is present, as are focal deposits of very fine fibers ( • ).
138 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS Figure 2. Continued. C: SPF-18 sunscreen. The mild elastic fiber hyperplasia is within the range of normal for age-matched animals. Figure 3. 10 MPD: Collagen. Masson's Tri-Chrome stain (magnification X295). A: SPF-7 sunscreen. Focal loss of affinity for the stain indicates some structural damage (*).
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