• ACTIIV Thickening Hair Serum Oil-Based for Textured Hair 1.8 oz plant-based scalp and hair thickening serum.
  • ACTIIV oil-based thickening hair serum bottle with key benefits on a white background
  • Instructions on how to use ACTIIV oil-based thickening hair serum with a bottle and people applying it.
  • ACTIIV oil-based thickening hair serum bottle with dropper on a beige background, featuring product feature icons.
  • Before and after comparison of a person's hairline using a ACTIIV oil-based thickening hair serum.
  • Three key ingredients for ACTIIV oil-based thickening hair serum with images and descriptions on a beige background

Thickening Hair Serum - Oil Based For Textured Hair

ACTIIV Thickening Hair Serum transforms your daily routine into a targeted scalp care ritual — designed to strengthen follicles, optimize scalp, and visibly improve hair density.
Its clean, oil-based formula absorbs instantly, delivering nourishment and noticeable results with every use. Ideal for curly and textured hair.

Size:

90 Day Guarantee

  • Thickens and strengthens hair with a fast-absorbing oil-based formula
  • Targets areas of concern to support denser, fuller-looking hair over time
  • Improves strand strength and resilience, reducing breakage and shedding

Step 1 — Start with wet or dry hair

Step 2 — Apply Serum Directly to Scalp
Using the precision dropper, apply 1 full dropper directly onto areas of focus — typically along the hairline, crown, or areas experiencing thinning.
Part the hair to expose the scalp and distribute evenly with fingertips.

Step 3 — Massage to Activate
Massage gently for 30–60 seconds to help evenly spread the serum.
Do not rinse — this leave-in formula is designed for full absorption.

Step 4 — Style as Usual
Allow a few minutes for the serum to absorb fully before styling. For best results, use daily.

Sesamum Indicum (Sesame) Seed Oil,Caprylic/Capric Triglyceride, Ricinus Communis (Castor) Seed Oil, Coconut Alkanes
Heptyl Undecylenate,Olea Europaea (Olive) Fruit Oil Bacopa Monnieri Leaf Extract, Prunus Amygdalus Dulcis (Sweet Almond) Oil, Fragrance, Coco, Caprylate/Caprate, Moringa Oleifera Seed Oil, Serenoa Serrulata Fruit Extract,Trifolium Pratense Flower Extract, Camellia Sinensis Leaf Extract, Rosmarinus Officinalis Leaf Extract, Argania Spinosa Kernel Oil, Tocopherol.

People with textured, curly, or coily hair types looking to boost hydration and thickness while maintaining definition and softness.

Top: Mint, Orange, Plum, Bergamot
Middle: Rose, Mate, Violet Nutmeg
Bottom: Vanilla, Oakmoss, Sandalwood, Amber

Plant-Based, Scalp-Focused Ingredients

Pumpkin seed extract ingredient icon in ACTIIV hair care, known for supporting healthy-looking hair and scalp balance. Pumpkin seed extract ingredient icon in ACTIIV hair care, known for supporting healthy-looking hair and scalp balance.

Pumpkin Seed Oil

Known for its conditioning properties, it enhances the appearance of soft, shiny, and healthy-looking hair.

Red Clover botanical ingredient icon in ACTIIV hair care, used for antioxidant support and scalp nourishment. Red Clover botanical ingredient icon in ACTIIV hair care, used for antioxidant support and scalp nourishment.

Red Clover

Rich in natural compounds, it helps maintain a clean-feeling, balanced
scalp for healthier-looking hair.

Brahmi herb ingredient icon featured in ACTIIV hair formulas for calming and strengthening hair and scalp. Brahmi herb ingredient icon featured in ACTIIV hair formulas for calming and strengthening hair and scalp.

Brahmi

Revitalizes hair for a healthier-looking appearance — Brahmi is known to condition and support the scalp, helping strands look refreshed and lively.

Overall rating: 4.0 / 5 from 6 reviews.

AI Generated Review Summary

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Reviews

"tried once… still deciding on it."

— Denise (1/5)

"Product works well and pairs great with the shampoo and conditioner for thickening hair"

— Jacob (5/5)

My son has a patch

"My son has a patch where he lost his hair and the serum is helping it grow back"

— Beth V. (5/5)

It only made my scalp

"It only made my scalp oiler than normal. I have naturally oily hair"

— Lei B. (3/5)

I had surgery six months

"I had surgery six months ago that has resulted in some temporary hair loss. This has given me a boost with my hair looking more like I’m used to!"

— Jennifer H. (5/5)

Really nice product. After using

"Really nice product. After using it daily, I see my hairfall being reduced. Not sure if as time goes by, new hair might come but this oil has definitely added strength to my existing hair."

— Sagar H. (5/5)

Q&A

Your Questions Answered, Before You Buy

A daily leave-in scalp serum formulated specifically for textured, natural, coily, curly, or high-porosity hair. Same thickening plant actives as the Water-Based Serum — in an oil carrier that better suits textured hair absorption.

No. Lightweight cold-pressed oils—like castor, sea buckthorn, and jojoba—absorb quickly for shine and moisture without residue or flatness.

Expect softer, more hydrated scalp and hair within 2–3 weeks, less shedding in 6–8 weeks, and visibly thicker hair within 3–6 months. Results improve with consistent use over time.

Absolutely. Apply after towel-drying to lock in scalp hydration and enhance the results of Recover or Renew before styling.

Yes. It doubles as a smoothing oil for mid-lengths and ends—adding shine, reducing frizz, and protecting from dryness.

Results gradually fade as scalp hydration decreases. Daily consistency helps maintain thicker, healthier-looking hair.

It's safe for all hair types, but the Water-Based Serum absorbs more easily on fine, straight, or low-porosity hair. Not sure which is right for you? Take the free hair quiz at actiivbrand.com.

Water-Based: ideal for fine, straight, or low-porosity hair.

Oil-Based: ideal for textured, coily, or high-porosity hair. Both deliver the same thickening actives — choose by hair type.

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