The Cornish Seaweed Bath Co.

Deep Conditioning Hair Mask

Made in Cornwall

£34.95

Our Deep Conditioning Hair Mask is finally here! Suitable for all hair types, this deeply nourishing treatment is especially beneficial for hair that is dry, dehydrated, frizzy or in need of extra conditioning. It delivers deep, weightless hydration without leaving the hair feeling heavy or coated. Our seaweed, herbs and plant-derived conditioning ingredients help to strengthen the hair, reduce breakage and improve silkiness, elasticity and natural shine. Instructions for use: After shampooing, towel-dry the hair and smooth a generous amount through the mid-lengths to ends. Leave for 10-15 minutes, or longer for a deeper treatment, before rinsing thoroughly. Use weekly in place of our regular conditioner, or 2-3 times per week for very dry or damaged hair. Deeply hydrating yet weightless, our silicone-free Deep Conditioning Hair Mask helps to smooth and condition all hair types, while being especially beneficial for dry, frizzy or thirsty hair. Infused with seaweed, tuber fleeceflower, angelica sinensis, mint and frankincense, alongside nourishing argan and oat oils, it helps restore moisture, reduce static and leave hair stronger, silkier, shinier and easier to manage. Its calming blend of lavender, rose geranium, sandalwood, cedarwood, chamomile and benzoin creates a softly floral, woody and grounding aroma. We hope you love this deeply nourishing treatment – for whenever your hair needs a little extra care.

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Price checked 16 October 2026. We may earn a small commission when you buy through this link. It never affects a medal rating.