Noticing thinned shampoo with odd smell; possibly expired or altered batches received.

2026-02-15 Shampoo reviews Categroy：Unisex Views：339

Experiencing thinned consistency and chemical odor in recent shampoo orders, suspecting expired stock or potential tampering affecting product integrity.

This is a review from Amazon.com about product:

Keratherapy Keratin Infused Moisture Shampoo, 10.1 fl. oz., 300 ml - Anti Frizz Moisture Shampoo for Oily Scalp and Dry Ends - Kerabond Technology, Aloe Vera, & Willow Bark

My Shampoo Review: Thinned Texture & Chemical Smell Issues

The last 2 shipments I received shampoo that was thinned out and had a weird chemical smell to them. Either they are very old batches that have been sitting on a shelf for a while or they have been tampered with.

Shampoo Basics & Tips

Understanding Shampoo Consistency and Odor Changes

Thinned Formulation: Shampoo viscosity changes could indicate ingredient separation due to prolonged storage. Most formulas contain stabilizers that degrade over 2-3 years, potentially altering texture.

Chemical Smell Development

Shelf Life Factors: Preservatives like parabens break down over time, releasing volatile compounds. Temperature fluctuations during storage accelerate this process, creating unusual odors.

Batch Age Indicators

Production Codes: Manufacturers use Julian date coding (e.g., 22435 = 2022 day 435). Older batches exceeding 36 months may show quality degradation.

Tampering Evidence

Packaging Integrity: Legitimate shrinkage occurs naturally, but sudden viscosity changes combined with broken seals suggest possible dilution or contamination during handling.

Quality Preservation

Storage Conditions: Ideal shampoo preservation requires stable temperatures (15-25°C) and humidity below 60%. Improper storage accelerates ingredient breakdown.

This shampoo gives me clean hair and a calm mind from aromatherapy.

My hair feels very clean with this shampoo, and I adore the aromatherapy scent that helps me feel calm and content. But the bottles are too similar, causing mix-ups, and it's not ideal for dry hair types.

I love this shampoo for its gentle scent and long clean retention.

This shampoo has become my favorite due to its mild fragrance and how it keeps my hair clean for days, outperforming other brands I've tried in my daily routine.

I love how this shampoo cleans without dryness, leaving my hair fresh and buildup-free.

I appreciate this shampoo for thoroughly cleaning my hair without causing dryness, thanks to its rich lather that eliminates product buildup and imparts a lasting fresh scent.

I love how this shampoo thickens my hair in a month, but the packaging needs improvement for easier use.

I really like this shampoo because it has made my hair appear thicker after just one month of use, although the conditioner is too thick to squeeze out easily and the bottles are hard to read, which affects my daily routine.

I tried this shampoo and my wife's hair loss reduced significantly, highly recommended.

After numerous shampoo trials for my wife's hair loss, this suggested one cut the problem dramatically, and I strongly recommend it for its effectiveness and benefits.

I love this light shampoo with a fresh, non-lingering scent that enhances my thin, colored hair's health and manageability.

With my thin, colored, and slightly wavy hair, I find this lightweight shampoo exceptional because it provides a fresh, clean scent without lingering, while improving hair texture and color retention for a healthier look.