146 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS Figure 6. 16 MPD: Elastic fibers. Luna's Stain (magnification x 370). A: SPF-7 sunscreen. A typical focus of fine elastic fibers. B: SPF-16 sunscreen. Tinctorial changes in subepidermal collagen ( • ) can be clearly seen as can the increase in mast cells.
BROAD-SPECTRUM SUNSCREENS 147 6.(3 Figure 6. Continued. C: SPF-18 sunscreen. Mild elastic fiber hyperplasia but few mast cells (--•-). Figure 7. 16 MPD: Collagen. Masson's Tri-Chrome stain (magnification X 295). A: SPF-7 sunscreen. Loss of affinity for the stain is marked but remains focal (*).
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