What is the specific size of this Biolage shampoo?

This shampoo comes in a 250ml quantity.

How can I verify the authenticity of this product?

The product is identified by the barcode 3474630621084.

The condition is not specified, but it is listed for resale.

Name: Shampoo
Brand: Biolage

Shampoos

Biolage · 250ml

Used

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New / Sealed

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What is the specific size of this Biolage shampoo?: This shampoo comes in a 250ml quantity.
How can I verify the authenticity of this product?: The product is identified by the barcode 3474630621084.
Is this a new or used item?: The condition is not specified, but it is listed for resale.