5.3

Trader Joe's

Hair Serum

Name: Trader Joe's Hair Serum
Brand: Trader Joe's

serum

Overall score5.3

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Trader Joe's Hair Serum scores 5.3/9.8 overall. It ranks highest in low irritation risk (9.5) and formulation safety (8.0).

✶ Hero ingredients

#1Cyclopentasiloxane

Lightweight silicone carrier

#2Dimethicone

Silicone that smooths and protects

#3Cocos Nucifera (Coconut) Oil

Plant-derived oil

Score breakdown

Overall

5.3

Hydration Efficacy5.1

Irritation Risk9.5

Active Ingredient Strength2.1

Ingredient Transparency7.5

Formulation Safety8.0

Estimated — based on ingredient analysis. Scores refine as user reviews are added.

Scores last verified: July 2026

What makes Trader Joe's Hair Serum stand out

Trader Joe's Hair Serum is a decent serum with an overall score of 5.3/9.8. it takes a straightforward approach to skincare. The formula leads with Cyclopentasiloxane, Dimethicone, Cocos Nucifera (Coconut) Oil — ingredients that support the skin barrier and moisture levels.

It performs well on low irritation risk (9.5). On the flip side, active ingredient concentration is on the lighter side.

Is this right for you?

Great for

✓Sensitive skin — low irritation risk with a gentle formulation
✓Safety-conscious shoppers — clean formulation with minimal flags
✓Ingredient-aware buyers — transparent, well-documented formula

May not suit

⚠Those seeking potent actives — this leans more maintenance than treatment

Key ingredients

✶
Cyclopentasiloxane
Softens and smooths — #1 in the INCI list
✶
Dimethicone
Softens and smooths — #2 in the INCI list
✶
Cocos Nucifera (Coconut) Oil
Softens and smooths — #3 in the INCI list
✶
Butyrospermum Parkii (Shea Butter)
Softens and smooths — #4 in the INCI list
✶
Glycerin
Draws in moisture — #5 in the INCI list

Full ingredient list

14 ingredients — listed in INCI order (highest concentration first)

#1Cyclopentasiloxane #2Dimethicone #3Cocos Nucifera (Coconut) Oil #4Butyrospermum Parkii (Shea Butter)#5Glycerin #6Rubus Fruticosus (Blackberry) Fruit Extract #7Euterpe Oleracea (Acai) Fruit Extract #8Helianthus Annuus (Sunflower) Seed Extract #9Ribes Nigrum (Black Currant) Fruit Extract #10Morus Nigra (Black Mulberry) Extract #11Vanilla Planifolia Fruit Extract #12Argania Spinosa (Argan) Kernel Oil #13Tocopheryl Acetate (Vitamin E)#14Fragrance

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Ingredient breakdown

Works on your skin7
Softens and smooths5
Draws in moisture1
Added scent1

5.3