Forearm Showing Tic-Tac-Toe Marking Near Amber Dropper Bottle Suggesting Allergy Skin Test Image

Forearm featuring tic-tac-toe grid drawn with black marker beside amber dropper bottle releasing single droplet. Bright natural light and white background creating clean clinical mood with soft shadows and visible blue sleeve adding human element. Scene suggesting allergy skin testing, topical reaction check, or simple playful marking for clinical demonstration. Working well for allergy testing articles, dermatology education, clinical procedure guides, pharmaceutical marketing, patient information leaflets, blog posts on skin reactions, and social media campaigns about allergy awareness. Tight composition allowing crop for web banner, editorial header, packaging close-up, or mobile social post while leaving negative space top-left for headline or overlaying text.