Please choose the correct ending to complete the given sentence: Youth: [header] How to treat acne with light therapy [title] Talk to your doctor. [step] Before getting light therapy, your doctor will need to determine what sort of light treatment you are eligible for. Only your doctor will be able to decide what sort of light is best for your skin.

Ending1: If you have very dark skin, your doctor may conduct an eyelid light test to determine whether or not it is for your specific skin type. Other light treatment options include powders, waxing injections, oil blotting, and laser resurfacing. Ending2: [substeps] There are three primary versions of light therapy treatment for acne: red light, blue light, or a combination. Blue light is adequate for treating small areas of rough or raised skin. Ending3: [substeps] Color therapy uses the same medication that is used to treat acne. Visiting your doctor can provide access to these together. Ending4: Follow the instructions that your doctor gives you for your light therapy options. Some light therapy options you may consider include : [substeps] Ct scans and x-rays can help your doctor remove dark spots and other areas that may be getting worse.

Answer format: ending1/ending2/ending3/ending4