There's no easy way to determine if a product is fake just by looking at it, but there are some things you can keep in mind that may help you spot a fake product. For example, if the price is significantly lower than the average price for that product, that could be a red flag. Additionally, if the listing includes grammar or spelling errors, or if the product photos are blurry or look like they've been doctor, that could also be signs that the product is not legitimate.
Of course, none of these things are guaranteed to mean that a product is fake, but if you see multiple red flags, it's probably best to err on the side of caution and avoid purchasing the product.