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1
One time purchase
$19.00
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Classic, cobalt blue
Semi-Perm
16-24+ washes
Most vivid on level 7+ hair
Our clean & vegan semi-permanent hair dye combines salon-grade pigments with a nontoxic formula that deposits ultra vibrant color. Our semi-permanent hair dyes do not damage the hair, in fact they’re super conditioning with a high-quality cream base that acts l
4.9
74 ratings
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Blue Ruin
Have gone through the many colors of blue with GDY, Blue Ruin has always brought me the most joy. Stays vibrant for a long time.
D
Diana · September 19, 2026
under tone
I like this color and how vibrant it is. Mixing it with compatible colors creates a different undertone that I love.
C
Christinia · September 23, 2026
Amazing hair dye!!!
Blue Ruin is so good!! It stayed in my hair for so long. I was able to go to a waterpark and it still be pretty pigmented. Get this!!
