Hair fillers are tiny hair pieces affixed to the scalp using tape, glue, or clips, mainly to conceal minor thinning in areas like the temples or crown. Available in diverse colors and textures, they blend seamlessly with your natural hair. Wiglets, on the other hand, are larger hair pieces attached using the same methods. They're used to cover more extensive thinning, like the scalp's top or entirely. Also coming in various colors and textures, wiglets can mimic your natural hair and be styled differently. Your ideal choice depends on your specific needs and preferences: opt for hair fillers to address small thinning spots, while wigs work better for larger areas of thinning.