Wella T14 is a pale ash blonde toner designed to neutralize brassy tones, especially yellow and orange hues in bleached or lightened hair. Before applying Wella T14, hair typically has yellow, gold, or orange undertones from bleaching or fading color. After using Wella T14 toner (usually mixed with a 20 volume developer), the hair shows cooler, ashy blonde or silver tones with a reduction of brassiness. The toner works best on hair that is pale yellow in base and sometimes requires mixing with Wella 050 cooling violet for strong orange tones. Users often show "before" photos with warmer, brassy hair and "after" photos with visibly cooler, ashier, and more muted blonde shades. The toner can be applied at home and left on for about 20-30 minutes for optimal results. For best effect, the hair should be light enough (around a level 9 or 10) for the toner to show fully. Darker or unevenly lightened areas may need additional bleaching or correction to achieve a uniform ash tone with Wella T14. Summary of before and after effects of Wella T14 toner:

• Before: Yellow/orange/brassy blonde hair
• After: Pale ash blonde, cool ashy tones, reduced brassiness, occasionally silver shine

This matches results shown in multiple tutorial and review videos and photos where the change is from warm brassy shades to cool ash blonde shades after Wella T14 toning.