{"product_id":"bilt-hamber-auto-wash-ph-neutral-shampoo-concentrate","title":"Bilt Hamber Auto-Wash | pH-Neutral Shampoo Concentrate","description":"\u003ch2\u003eThe economics are the story\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003e5ml — one teaspoon — per 10 litre bucket.\u003c\/strong\u003e That is a dilution of roughly \u003cstrong\u003e1:2000\u003c\/strong\u003e, and it is why Bilt Hamber can claim \u003cstrong\u003eup to 100 washes from a 500ml bottle\u003c\/strong\u003e. The maths is consistent: 5ml × 100 = 500ml. Most \"concentrated\" shampoos are asking for 30–50ml a bucket. This one is genuinely concentrated.\u003c\/p\u003e\u003ch2\u003eThe surfactant system\u003c\/h2\u003e\u003cp\u003eBilt Hamber's SDS declares \u003cstrong\u003ecocamidopropyl betaine (1–5%)\u003c\/strong\u003e — an amphoteric — with \u003cstrong\u003esodium laureth sulfate (1–5%)\u003c\/strong\u003e anionic and a trace of \u003cstrong\u003ecocamide DEA\u003c\/strong\u003e. Amphoteric plus anionic is a classic pairing: the betaine moderates the harshness of the sulfate and improves foam quality, which is how you get lubricity and cleaning at a dilution this extreme.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003epH is approximately 7.\u003c\/strong\u003e Genuinely neutral, per the SDS — not \"pH balanced\" in the marketing sense. The mixture carries \u003cstrong\u003eno CLP hazard classification\u003c\/strong\u003e whatsoever.\u003c\/p\u003e\u003ch2\u003eWhere it belongs in your process\u003c\/h2\u003e\u003cp\u003eAuto-Wash contains no wax, no gloss additive and no filler. That is exactly what you want in a maintenance shampoo, because those additives interfere with what comes next — a coating, a sealant, a wax, or a paint correction. Bilt Hamber also position it as salt-free and suitable for bare steel, which matters if you're washing a project car.\u003c\/p\u003e\u003cp\u003eWash \u003cem\u003eafter\u003c\/em\u003e your pre-wash — Touch-Less or Auto-Foam — not instead of it.\u003c\/p\u003e\u003ch2\u003eHow to use it\u003c\/h2\u003e\u003cp\u003ePour the 5ml of concentrate into an \u003cstrong\u003eempty\u003c\/strong\u003e bucket first, then fill with fast-flowing warm water to generate the foam. Filling first and dosing after gives you a flat, disappointing bucket. It can also be used neat as a spot pre-cleaner on stubborn marks.\u003c\/p\u003e\u003ch2\u003eOne honest note\u003c\/h2\u003e\u003cp\u003eBilt Hamber's product page states Auto-Wash \"contains no colourants, waxes, perfumes or thickeners.\" Their own safety data sheet lists perfumes in the contents declaration. Those two statements contradict each other, and rather than pick whichever suits us, we're telling you the contradiction exists. If a fragrance-free wash is a hard requirement for you, ask us and we'll get it in writing from Bilt Hamber before you buy.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eSafety Data Sheet (Australia)\u003c\/strong\u003e\u003cbr\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0669\/0707\/8878\/files\/Auto-Wash_SDS_au.pdf?v=1784379282\" target=\"_blank\" rel=\"noopener\"\u003eDownload the Bilt Hamber Auto-Wash SDS (PDF)\u003c\/a\u003e\u003c\/p\u003e","brand":"Bilt Hamber","offers":[{"title":"500ml","offer_id":48433204396254,"sku":"BH-AutoWash-500ml","price":54.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0669\/0707\/8878\/files\/auto-wash_500ml-scaled-e1589281801139.jpg?v=1784179133","url":"https:\/\/www.alphadetails.com.au\/products\/bilt-hamber-auto-wash-ph-neutral-shampoo-concentrate","provider":"Alpha Details","version":"1.0","type":"link"}