Using shampoo every day is unlikely to cause hair loss directly. However, over-shampooing or using harsh shampoos can cause damage to the hair and scalp, which can contribute to hair loss over time.
When you shampoo your hair too frequently, it can strip your hair of its natural oils and dry it out, making it more prone to breakage and hair loss. Additionally, using harsh shampoos that contain sulfates or other harsh chemicals can damage the hair and scalp, leading to hair loss.
That being said, some people may need to shampoo their hair every day due to factors such as oily scalp or intense physical activity. If you find that shampooing your hair every day is necessary for your hair type and lifestyle, it's important to choose a gentle shampoo that is formulated for daily use.
If you are experiencing hair loss, it's important to consult with a dermatologist or healthcare professional to determine the underlying cause and determine the best treatment options for you.