Claim: does shaving your hair actually make it grow back thicker and darker

The claim that shaving hair makes it grow back thicker and darker is false. Mainstream medical sources, including the University of Texas and Cleveland Clinic, confirm that shaving does not affect hair's biological properties. They explain that any perceived increase in thickness or darkness is due to the blunt edges of newly cut hair and not actual changes in growth or color. Disputing this claim, there are no credible sources that support the idea that shaving alters hair characteristics in any way. This consensus among experts leads to a strong rejection of the claim. The models diverge sharply — treat this as higher-uncertainty. OpenAI comes in highest (90%), while Perplexity is lowest (5%). OpenAI expresses higher confidence than Gemini on this claim. There are no opposing sources that provide credible evidence supporting the claim that shaving hair makes it grow back thicker and darker. All reviewed evidence consistently debunks this myth, attributing the perception of thicker hair to the nature of hair regrowth and the visual effects of shorter hair. The absence of any credible counterarguments reinforces the strength of the conclusion drawn from the available evidence.