Do hair fibres damage hair?

When it comes to hair fibres, many individuals are concerned about their potential impact on the natural hair. Could you elaborate on whether hair fibres actually damage hair? Are there specific types of hair fibres that are more likely to cause harm? What are the common signs that hair fibres may be damaging the hair, such as dryness, breakage, or dullness? Are there any scientific studies that support or refute this claim? Understanding the potential risks associated with hair fibres is crucial for individuals considering their use.