by Wigo is great for straightening and smoothing.
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100% Boar Soft Smoothing Wave Brush Perfect Comb for Smoothing & Curls – ThePuffCuff
Wooden Hair Brush Brush with Bamboo
100% Boar Bristle Hair Brush – Beauty by Earth
Travel Size Detangling Hair Brush – The Hair Edit
Hair brushes: Divine
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Gentle Smoothing 100% Boar Bristles All Purpose Hair Brush - Wigo
The Brush No. 003 – Crown Affair
9 Best Boar Bristle Brushes for Every Hair Texture
The Brush No. 003 – Crown Affair