Products are split into three levels based on ingredient labels

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Best choice
SLOW
Contains ingredients with possible health concerns
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Contains harmful ingredients
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Hairprint

Thicken Serum - Hair Growth Stimulation

Last verified: December 10, 2025

  • Water Deionized/purified
  • Sophora Root Extract
  • Polygonum Cuspidatum
  • Asia Sari Root Extract
  • Angelica Sinensis
  • Eclipta Alba
  • Tussilago Farfara Flower Extract
  • Achillea Millefolium Extract
  • Cinchona Succirubra Bark Extract
  • Fermented Radish Root
  • Coconut Milk
  • Arborvitae Oil
  • Biotin
  • Vitamin B7
  • Niacinamide
  • Vitamin B3
  • Black Pepper Oil
  • Piper Nigrum Seed Oil.

Why This Product is Rated SLOW

Thicken Serum - Hair Growth Stimulation by Hairprint has been evaluated by Million Marker and contains some ingredients with possible health concerns. This product is rated SLOW, indicating moderate concern.

We recommend reviewing the ingredient list carefully and considering safer alternatives when possible. SLOW-rated products may still be acceptable for occasional use.

Learn more about how Million Marker scores products →

Frequently Asked Questions

Thicken Serum - Hair Growth Stimulation by Hairprint - Non-toxic Hair Styling + Treatment product rated SLOW by Million Marker, free from BPA, phthalates, and parabens

Where to buy

Hairprint Google Search

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