Treatments & masks · TRESemmé

TRESemmé Keratin Seal Smooth Hair Mask 300ml

£4.00 at Boots
4.8 / 5
★★★★★★★★★★
227 reviews across 1 retailer
97% rate it 4 or 5 stars
5★
190
4★
30
3★
4
2★
3
1★
0
Boots4.79★★★★★★★★★★227 reviews

Summary. Reviewers are very positive: 97% give it 4 or 5 stars.

+Positives

  • Softness. Hair is described as softer and smoother afterwards. 160 reviews
  • Scent. Reviewers often single out how it smells. 129 reviews
  • Frizz and curls. Helps tame frizz and define curls. 80 reviews
  • Shine. Many notice extra shine. 76 reviews
  • Moisture. Dry hair feels more hydrated and nourished. 41 reviews

−Negatives

  • Can be drying. Some find it leaves hair dry, rough or stripped. 5 reviews
  • Residue. Some say it leaves hair greasy, heavy or coated. 5 reviews
Last 12 months: 4.8 from 227 reviews, in line with the all-time score.
Product-specific reviews only: 2 reviews that also appear on other products were left out, so every review here is about this product.

Reviews from 27 May 2026 to 23 Aug 2026.