>>69
髪質の問題じゃないかな。
黒髪は茶髪よりあらが目立ちにくい。
https://live.staticflickr.com/2135/4507109552_2065830bd4_b.jpg
https://previews.agefotostock.com/previewimage/medibigoff/ba1da9988d3c647f8a707f5e691583c2/x4j-1502534.jpg
https://c8.alamy.com/comp/C8RTBX/xingu-indians-in-the-amazone-brazil-C8RTBX.jpg
https://c8.alamy.com/comp/C8RWXM/school-for-the-xingu-indians-in-the-amazone-brazil-C8RWXM.jpg
https://previews.agefotostock.com/previewimage/medibigoff/ac2f7d3756293333893ab3ae837667b4/pcb-tkbraz407.jpg
https://c8.alamy.com/comp/BE31PC/children-of-the-xingu-indian-go-to-school-built-in-the-village-by-BE31PC.jpg
https://c8.alamy.com/comp/BEH8MR/children-of-the-xingu-indian-go-to-school-built-in-the-village-by-BEH8MR.jpg