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

2026-02-25 Shampoo reviews Categroy：Unisex Views：361

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.

I love how this shampoo eliminates dandruff while leaving a strong tobacco aroma that I enjoy.

I have been impressed by this shampoo's ability to control dandruff and nourish my scalp. However, the powerful tobacco scent is very distinctive; I like it, but it could be overwhelming for some users.

I'm amazed by Native's divine-scented shampoo that gives my hair lightweight nourishment and natural volume.

Using Native's shampoo, I appreciate its divine scent, lightweight nourishing feel, and the volume it adds when air-dried, leaving my hair bouncy, soft, and healthy even with blow-drying.

I find this shampoo lathers well, smells natural, and leaves my hair clean, soft, and less oily after use.

In my experience, this shampoo has a thinner consistency but lathers very well, and despite being slightly drying, it leaves my hair cleaner, softer, and less oily with a pleasant natural fragrance that I appreciate over synthetic options.

I love how this shampoo lathers well, making my hair soft, manageable, and tangle-free while preserving color.

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I appreciate how this shampoo maintains scalp cleanliness with weekly minimal use.

Using this shampoo, my scalp feels clean and refreshed with infrequent weekly application. Although hair thickening effects haven't appeared after a few months, I value the cleanliness and convenience it brings to my lifestyle.

I found that this shampoo restored my hair's softness and reduced tangles.

My hair was damaged from coloring, but this shampoo made it clean, soft, and manageable quickly. I no longer face breakage when combing, and my hair looks revitalized.