Hydrolyzed Keratin + Sodium PCA + Avocado Oil

SMOOTHING KERATIN CONDITIONER

4.8 1459 reviews
$48

13.19 fl oz / 390 mL

A smoothing conditioner that leaves lengths softer, sleeker and easier to manage without sacrificing body.

90-Day First-Order Guarantee

Free standard U.S. shipping on all orders

Description

Volume should not come at the expense of softness and manageability—and conditioning should not leave hair looking flat. This formula is designed to balance both: enhancing visible fullness while smoothing frizz, improving detangling and helping protect against breakage, so hair feels softer and more controlled while maintaining a fuller-looking finish.

Hydrolyzed Keratin works alongside glycerin and Sodium PCA in a conditioning system designed to improve slip, support moisture retention and smooth the hair surface. Reducing roughness and friction through the lengths can make detangling easier while limiting the mechanical stress that contributes to breakage.

Coconut, avocado and sweet almond oils add emollient conditioning through the lengths. Hair is left polished, smooth and healthier-looking, with softness and manageability balanced against the fuller-looking finish that gives the formula its distinct volumizing character.

How to use
  1. After shampooing, apply to damp hair, gently squeezing out excess water first. Use enough to evenly coat the mid-lengths and ends.
  2. Work the conditioner through the hair with your fingers for even distribution and gentle detangling. Leave on for 1–3 minutes.
  3. Rinse thoroughly.
Who's it for

Ideal for hair that needs softness, smoother lengths and easier manageability but tends to lose body with richer conditioners.

Especially well suited to fine hair or hair that is easily weighed down, including those dealing with tangling or frizz who want conditioning while keeping hair looking full rather than flat.

Ingredients

KEY INGREDIENTS

Hydrolyzed Keratin

Hydrolyzed Keratin consists of smaller protein fragments that can interact with porous, damaged areas and temporarily deposit along the hair surface. This can help smooth roughness, improve slip and reinforce the feel of compromised lengths, making hair easier to detangle while helping limit friction-related mechanical stress during handling.

Sodium PCA

Sodium PCA is a humectant that attracts and binds water, helping support moisture retention in the hair. This moisture-binding role can help maintain softness and flexibility while reducing a dry, rough feel, supporting smoother, more manageable hair.

Avocado Oil

An emollient oil that helps lubricate and condition the hair surface, improving softness, suppleness and smoothness through the lengths. By reducing roughness and improving surface glide, Avocado Oil can support easier handling and a more polished, conditioned feel.

FULL INGREDIENTS

Aqua/Water, Cantharellus Cibarius (Chanterelle) Extract➀, Cetearyl Alcohol, Distearoylethyl Dimonium Chloride, Glycerin, PCA Glyceryl Oleate, Sodium PCA, Urtica Dioica (Nettle) Leaf Extract➀, Zinc PCA, Tocopherol, Parfum/Fragrance, Caffeine, Guar Hydroxypropyltrimonium Chloride, Benzyl Alcohol, Sodium Benzoate, Cocos Nucifera (Coconut) Oil➀, Persea Gratissima (Avocado) Oil➀, Prunus Amygdalus Dulcis (Sweet Almond) Oil➀, Potassium Sorbate, Mentha Piperita Oil➀, Hydrolyzed Keratin, Rosmarinus Officinalis Leaf Oil➀, Lactic Acid, Leuconostoc/Radish Root Ferment Filtrate, Menthol➁, Limonene➁, Camphor➁, Citrus Aurantium Bergamia Peel Oil, Pinene➁

➀Ingredients from organic Farming

➁Made using organic ingredients

Shipping and Returns

90-Day First-Order Guarantee

If your first SERIVA order isn't right for you, you can request a refund within 90 days of confirmed delivery under the 90-Day First-Order Guarantee.

Use it normally.One opened bottle may be used substantially or fully and still qualify for a refund. The opened trial bottle normally does not need to be returned.

Simple to request.No before-and-after photos, routine documentation, or phone call required.

Buying more than one bottle?Additional bottles must remain unopened and unused to be included in the refund. If a qualifying unopened return is required, SERIVA covers return shipping.

View full guarantee terms

Free standard U.S. shipping on all orders.

Orders are processed within 1–2 business days.

U.S. delivery: 2–4 business days after processing.

Tracking details are sent by email when available.

Damaged or incorrect order? Contact us at care@serivaskin.com within 30 days of delivery.

SMOOTHING KERATIN CONDITIONER $48

Independent Consumer Study

RESULTS AFTER ONE USE

93%

said their hair felt noticeably softer

89%

said their hair was easier to detangle and manage

27%

less force needed to comb through wet hair

Independent Consumer Study · N=48

“My hair felt softer right away, and the lengths were much easier to comb through. It still had movement instead of that heavy, over-conditioned feel.”

Elena, NJ

WHY SLIP MATTERS THROUGH THE LENGTHS

When the hair surface feels rough, strands can catch against one another during detangling and handling. Conditioning that improves slip helps the lengths move past each other with less drag, making them easier to work through.

The goal is enough conditioning to reduce drag through the lengths without leaving the finished hair feeling heavy or over-conditioned.

MORE SLIP LESS DRAG EASIER HANDLING

THE FORMULA

THREE FORMS OF CONDITIONING SUPPORT

STRAND SUPPORT

Hydrolyzed Keratin

Smaller protein fragments can interact with porous, damaged areas and temporarily deposit along the hair surface, helping smooth roughness, improve slip and reinforce the feel of compromised lengths.

MOISTURE

Sodium PCA

Sodium PCA attracts and binds water, helping support moisture retention so the lengths remain softer and more flexible while reducing a dry, rough feel.

SURFACE CONDITIONING

Avocado Oil

Avocado Oil helps lubricate and condition the hair surface, supporting softness, suppleness and smoother glide through the lengths for a more polished, conditioned feel.

Frequently asked questions

Will this weigh down hair that tends to go flat?

It’s designed to condition and smooth the lengths while preserving a naturally movable finish rather than leaving hair feeling overly heavy or flat.

How often should I use the Conditioner?

Use it after shampooing as your regular rinse-out conditioning step.

When would I choose the Hair Mask instead?

Choose the Conditioner for regular wash-day softness, smoothing and manageability. Choose the Intensive Rescue Hair Mask when your lengths need a more intensive conditioning treatment.

Customer reviews

4.8

Based on 1459 Reviews

5 1251
4 157
3 32
2 12
1 7
  • 5 stars: 1251 (86%)
  • 4 stars: 157 (11%)
  • 3 stars: 32 (2%)
  • 2 stars: 12 (1%)
  • 1 star: 7 (0%)
L
Leah P.
yep

Hair feels nice after rinsing. easy.

M
Maya S.
Less pulling

My brush doesn't snag nearly as much coming out of the shower. I usually avoid conditioner because my hair goes flat, so this was a surprise.

J
Julia M.
Good with one catch

It's nice on the ends but if I bring it too close to my roots I lose some volume. learned to use less up top.

H
Heather N.

not heavy at all, even when i air dry. My hair feels soft instead of slippery/coated.

L
Lindsey G.
silky ends

I only need about a dime size, mostly below my ears. makes combing through the back so much easier.

R
Rachel D.
Soft without weight

My hair feels really soft after rinsing but it still has movement. I only need a small amount on the lengths.

O
Olivia C.
Will rebuy

after a few weeks, my ends are much easier to detangle. It doesn't make my fine hair feel coated.

J
Jenna H.

I mainly notice the difference after blow drying. My hair looks smoother and the ends don't feel as rough.

M
Marissa K.
Nice conditioner

It leaves my hair soft and it rinses clean. I have to be careful not to use too much or it can feel a little rich on my ends.

A
Alyssa P.
Really good

I keep it from the roots down and comb it through. My hair has more slip without going flat.

N
Nicole R.
Happy

My ends feel less dry after washing. simple but it works well for me.

K
Kara S.
Works well

The softness is noticeable and I like the finish. taking off one star because I go through the bottle faster than I expected.

E
Emily V.
Good for fine hair

I was worried it would be heavy. It isn't. my hair feels silky and still looks light after it dries.

A
Anna Z.
Soft hair

I use a small amount on my ends. I didn't notice much right away. after most of the bottle, My hair looks shinier after drying. My hair feels nicer but still like my normal hair. Worth it for me.

L
Lindsay N.
happy

My ends feel way better. will rebuy!

G
Gianna R.
Good for fine hair

i wanted to simplify my routine, not add something complicated. My hair feels silky but still has movement.

R
Renee E.
Light but soft

My ends feel much more manageable

M
Molly M.
not for me

I almost forgot to come back and review this. It doesn't leave a heavy film. But i'm not sure it's worth the price for my hair. I didn't notice enough difference. I probably won't reorder.

S
Sofia H.
Will rebuy

I usually know pretty fast if I hate the feel of a product. I kept the rest of my routine the same. I comb it through in the shower. after using it for a while, I started noticing that my hair feels softer and still bouncy. I mostly notice that my hair is easier to detangle. I don't need much product. No complaints from me.

A
Amber N.
Works well

After about three weeks, My hair feels soft without losing all its volume. It doesn't make my scalp oily.

L
Lauren Y.
Maybe

after a couple months, It's a nice conditioner but not a huge difference for me. It rinses out quickly.

A
Aurora J.
Not heavy

After a month, The ends look smoother when I blow dry. The texture is easy to distribute.

N
Nicole E.
Great

I bought this mostly out of curiosity. I keep it off my roots. after about six weeks, My hair feels softer and still bouncy. It doesn't make my scalp oily. I'm sticking with it.

H
Harper G.

I mainly like that it doesn't kill my volume. It spreads easily through the lengths.

I
Isla G.
Soft hair

I rinse it with cool water at the end. My ends don't feel as dry after rinsing.

H
Hailey M.
My new conditioner

I don't need much product. My hair has more slip without feeling limp.

J
Joanna E.
works well

I wasn't sure this would stay in my routine. I use it every other wash. after five or six weeks, My hair feels soft without that slippery coated feeling. It has good slip. I wish the pump were faster. Overall I'm happy with it

E
Elizabeth H.
Great conditioner

I use a small amount on my ends. At first I mainly noticed that a couple minutes is enough for my hair. Later, my lengths feel healthy and light. I like this one.

S
Stella L.
Finally

After a handful of washes, My hair detangles much easier in the shower. It rinses clean on my fine hair.

M
Morgan J.
Smooth hair

My ends feel way better!

M
Maya M.

It's okay. It's a nice conditioner but not a huge difference for me.

B
Brianna A.
5 stars

After about three weeks, My hair has more slip without feeling limp. It rinses out quickly.

H
Hazel Z.
On the fence

It gives me enough conditioning without flattening everything. I'm still deciding.

M
Marina B.
Soft not flat

I waited until I'd used it enough to be fair. My hair feels silky but still has movement.

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