Beauty and personal care items include a wide range of different products, from soaps in solid or liquid form, to more health-focused items such as acne cleanser or dandruff shampoo, to niceties such as hair dye. The target market for a personal care product is an important factor that reviews and comparisons will generally make clear. The gender and age of the user matter, as some products are made to reduce the signs of ageing while others assume that their user is young to begin with. Allergens and other ingredients are also important to consider. Many products advertise themselves as hypoallergenic, and comparison sites such as Expertido are helpful in determining which products are healthiest for those with weak immune systems, with chronic conditions, or who just want to avoid potentially developing a rash. The best reviews involve tests of care products rather than just reading their labels. Anecdotes such as the product's smell, how it worked for multiple reviewers, and so forth tell a person more about a care product than they can necessarily learn just by reading the information on the bottle or box. Finally, it's best to pick care products that appeal to you aesthetically. Whether it's the appearance of a bar of soap or the feeling of using a specific body wash or shampoo, care and beauty products are best measured not just by how good they made you look, but by how good they make you feel.