• sohl-I.D. Hair Serum capsules — argan, avocado & macadamia oils
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Hair Oil Serum Capsules

Hair Oil Serum Capsules

4.8 162 reviews
4.7 ★★★★★ ★★★★★ (550+) ratings on Amazon Amazon's Choice

One capsule. The exact dose your hair needs. Argan, avocado, and macadamia oils with vitamins A, E & B5 — sealed fresh until you open it. Glossy, smooth, frizz-free hair without the greasy feel. No guessing. No waste. No buildup.

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$29.95
$29.95/each
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Paraben & Sulfate Free
Cruelty-Free & Vegan-Friendly
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See It In Action

Product info

A rich blend of argan, avocado, and macadamia oils plus vitamins A, E and B5, delivered in individually sealed biodegradable capsules. Each capsule contains the optimum dose of oil to coat your hair perfectly — long lasting hydration for smooth, glossy hair without any greasy residue.

Key benefits:

  • Locks in moisture for silky smooth, hydrated hair all day
  • Rejuvenates and repairs dry, damaged hair
  • Non-sticky formula for soft, smooth strands with natural luster
  • Fortifies hair against everyday breakage
  • 40 individually dosed capsules — perfect for travel
  • Works on all hair types — straight, wavy, curly, coily

Key ingredients: Argan Oil, Avocado Oil, Macadamia Nut Oil, Vitamin A (Retinyl Palmitate), Vitamin E (Tocopherol), Pro-Vitamin B5 (Pantothenic Acid)

How to use

  1. Shampoo and condition hair as normal. Towel dry hair until damp.
  2. Pinch the top of the capsule with two fingers, twist and pull the top off. Alternatively, cut with scissors.
  3. Squeeze the serum onto your hands.
  4. Apply evenly from the mid-length to the ends of the hair.
  5. Do not rinse. Dry and style hair as normal.
  6. Pop the empty biodegradable capsule into hot water and watch it dissolve!

Delivery & returns

Free Standard Shipping on all US orders (4-5 Business Days).
Expedited Tracked: 2-3 Business Days - $11.00

Returns: 90-day money-back guarantee. Contact info@sohl-id.com with your order number for a prepaid return label.

Money back guarantee

We stand behind every bottle. If you are not completely satisfied with your purchase, contact us within 90 days for a full refund. No questions asked.

To initiate a return, email us at info@sohl-id.com with your order number. We will provide a prepaid return label and process your refund within 5 business days of receiving the product.

This guarantee applies to all products purchased directly from our store, whether single bottles or bundles.

Ingredients

Cyclopentasiloxane, Dimethiconol, Betaine, Dimethicone/Silsesquioxane Copolymer, Macadamia Ternifolia Seed Oil, Persea Gratissima (Avocado Oil), Paraffinum Liquidum, Argania Spinosa Kernel Oil (Moroccan Argan Oil), Tocopherol (Vitamin E), Pantothenic Acid (Vitamin B5), Retinyl Palmitate (Vitamin A), Fragrance

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Hair Oil Serum Capsules 1 ITEM
$29.95

Before & After

Before and after hair transformation

MY CURLS LOOK INCREDIBLE

I have 3B curls and live in Miami so frizz is basically my personality at this point. One capsule before leaving the house and my curls stayed defined until I got home. That literally never happens.

Before and after hair transformation

MY FINE HAIR ACTUALLY HAS SHINE NOW

Every oil I've ever tried made my hair look like I hadn't washed it. I was honestly done with oils completely. Tried one capsule and my hair looked glossy, not greasy, not flat. I kept checking the mirror because I couldn't believe it.

Before and after hair transformation

IT ACTUALLY PENETRATES MY 4C HAIR

Most products just sit on top of my hair and don't do anything. This one I could actually feel sinking in. My wash day results last way longer now and my hair stays soft between washes.

Before and after hair transformation

SAVED MY BLEACH-DAMAGED ENDS

I was about two bad days away from chopping all my hair off. The ends were crunchy and breaking. Two weeks of using a capsule after every wash and it's like I got a completely different head of hair.

Before and after hair transformation

HUMIDITY DOESN'T WIN ANYMORE

I have thick wavy hair and I live in Texas. By lunchtime my hair usually looks like I stuck my finger in a socket. Not anymore. One capsule and it stays smooth the whole day. I'm buying three more bottles.

Works on All Women & All Hair Types

WORKS ON MY CURLS

3C curls here. This is the first product that gives me definition AND shine without that heavy, weighed down feeling. My curls actually bounce now. I've repurchased twice already.

WORKS ON MY FINE HAIR

I gave up on oils years ago because everything made my thin hair look greasy by noon. One capsule gives me just enough. Shiny, bouncy, and my volume is still there at 5pm.

WORKS ON MY 4C HAIR

Nothing ever worked on my 4C hair without leaving buildup. This actually absorbs. My twist-outs are shinier, softer, and last so much longer. No residue, no flaking. Just healthy hair.

WORKS ON MY THICK HAIR

My hair is so thick and dense that most products barely make a dent. One capsule somehow smoothed the whole thing down without making it flat. My sister borrowed mine and now she wants her own.

WORKS ON MY COLOR-TREATED HAIR

I get my hair highlighted every 8 weeks and the damage was getting really noticeable. My ends aren't snapping off anymore and the color actually looks brighter. My stylist asked me what I changed.

WORKS ON MY AGING HAIR

After 45 my hair just changed. Thinner, dryer, lost all its shine. I was scared to use oil because of how little hair I have left. One capsule was the perfect amount. My hair looks like it did ten years ago.

Frequently Asked Questions

Will this make my hair greasy or weighed down?

No. Each capsule contains a pre-measured dose, so you physically cannot over-apply. That's the whole point of the capsule format. Whether you have fine, thick, curly, or coily hair, one capsule gives you glossy, smooth results without the greasy look. Most oils fail because you use too much from a dropper or pump. That problem doesn't exist here.

How does the capsule work?

Twist or cut open one capsule and apply the oil to damp or dry hair, focusing on mid-lengths and ends. Each capsule is sealed until you open it, so the formula stays fresh and full-strength every time. No oxidation, no half-used bottle losing potency. One capsule, one perfect dose, zero waste.

I have fine hair. Won't oil make it flat?

This was designed with fine hair in mind. The capsule delivers the exact amount fine hair needs, so there's no risk of over-applying and ending up with flat, limp hair. The blend of argan, avocado, and macadamia oils is lightweight. You get shine and smoothness without losing any volume.

Can I use this every day without buildup?

Yes. The formula is designed for daily use with no buildup. One capsule per use means your hair gets exactly what it needs and nothing more. No residue accumulating over time, no heaviness after a week of use. Use it every wash day or every morning as a finishing step.

Will this work on my hair type?

Yes. This formula works across every hair type and texture: fine and straight, thick and wavy, 3B-3C curls, 4C coils, color-treated, bleached, relaxed, transitioning, and natural. The capsule means you always use the right amount whether your hair is fine and easily weighed down, or thick and needs every drop. The argan, avocado, and macadamia oil blend with vitamins A, E, and B5 smooths the hair shaft, adds shine, and reduces frizz no matter your texture.

Is this worth the price compared to regular hair oils?

Each bottle has 40 capsules. That's 40 precisely dosed uses with zero waste. No product left in the pump, no oil oxidizing in a half-empty bottle, no guessing how much to use. Per use, it costs less than a coffee. You also get three oils (argan, avocado, macadamia) plus vitamins A, E, and B5 sealed fresh in every capsule, not a single-ingredient oil from a dropper bottle.

Does it hold up in humidity?

Yes. The oil blend seals the hair cuticle, which is what keeps humidity from causing frizz. Whether you live in Miami, Houston, New York in July, or anywhere with heat and moisture, the results hold through the day. One capsule in the morning and your hair stays smooth, defined, and frizz-free.

What's actually in each capsule?

Three natural oils: argan oil (shine and smoothness), avocado oil (deep penetration and moisture), and macadamia oil (lightweight hydration without heaviness). Plus vitamins A, E, and B5 for hair strength and protection. Each capsule is sealed fresh, so the formula doesn't oxidize like it would sitting open in a bottle. Every capsule is full-strength. The capsule shell itself is biodegradable.