The Glow Hair Stack Berry Duo Review
At our 2026-07-24 check, The Glow Hair Stack paired the berry shampoo and berry conditioner for $58.00, against $64.00 for the two bought separately — a historical $6.00 saving, or about 9%. Both products disclose 0.1% GHK-Cu and the bundle page gives clearer conditioner instructions than the standalone conditioner page does. It is a straightforward bundle; check the store for current pricing.
Who it fits
Best fit for
- Anyone who has already decided on the berry scent and wants both wash-day steps.
- Shoppers who want the conditioner-specific application instructions, which are clearer here than on the standalone page.
- People starting an Amplified Glow haircare routine from scratch.
Consider another option if
- You only need one of the two products — the saving does not apply.
- You prefer lavender; the Lavender Glow Hair Stack is the equivalent bundle.
- You want the higher disclosed peptide concentration, which the lavender line publishes.
What this product is
The Glow Hair Stack is a two-product bundle: one Amplified Glow™ Copper Peptide Strengthening Shampoo – Berry and one Amplified Glow™ Copper Peptide Nourishing Conditioner – Berry, each 473 mL. Amplified Glow discloses 0.1% GHK-Cu for the bundle, matching both components.
It is not a distinct formula. It is the same two products sold together at a lower combined price.
Formula and ingredient context
The bundle page discloses the combined hero ingredient set across both products: GHK-Cu, sodium hyaluronate, sea kelp extract, rosemary extract, green tea extract, keratin, niacinamide, panthenol, jojoba oil and coconut oil. Keratin, niacinamide and panthenol belong to the conditioner; sea kelp and rosemary to the shampoo.
One handy thing about the bundle page: it gives proper conditioner directions. The standalone berry conditioner page describes working up a lather, which looks like shampoo wording copied across by mistake. The bundle page has it right — focus on mid-lengths to ends and leave in for 2–3 minutes. There’s more on that in the berry conditioner review.
Routine fit
Shampoo first: apply to wet hair, massage into scalp and hair until a rich lather forms, rinse thoroughly. Conditioner second: focus on mid-lengths to ends, leave in 2–3 minutes, rinse thoroughly.
That is the conventional order, and our guide on shampoo and conditioner order explains why the sequence is what it is and what it does not determine.
Price and value context
At our 2026-07-24 check, the bundle was listed at $58.00, reduced from $74.00. The shampoo and conditioner were each $32.00 — $64.00 total — so the recorded saving was $6.00, or about 9%. Check the store before relying on that arithmetic.
At regular prices the arithmetic is different: $37.00 plus $37.00 is $74.00, exactly the bundle's regular price. So the bundle offers no saving at all at full price — the $6.00 advantage exists only because the bundle's sale discount is proportionally deeper than the components'.
For 946 mL of total product, $58.00 works out to $6.13 per 100 mL across the pair. That figure blends two different products and is only useful for comparing this bundle against the lavender bundle. Individual products versus a haircare bundle covers when bundling is and is not worth it.
Strengths and limitations
Strengths
- Recorded a $6.00 saving against the components at our 2026-07-24 check; verify live prices.
- Gives clearer, conditioner-specific directions than the standalone conditioner page.
- Both components disclose the same 0.1% GHK-Cu, so the routine is internally consistent.
- Covers both wash-day steps in one purchase.
Limitations
- No saving at all when both products are at their regular prices.
- Discloses a lower peptide concentration than the lavender line.
- No full ingredient list for either component.
- Bundling is only economical if you want both products in the same scent.
- No patch-test guidance.
What we could not establish
Amplified Glow does not publish these, and we have not confirmed them. We record them as open questions rather than guessing.
- Full INCI lists for both components.
- Whether the bundled bottles are identical to the standalone bottles.
- Fragrance composition.
Safety and patch-test information
Amplified Glow publishes: for external use only, avoid contact with eyes, and discontinue use if irritation occurs.
Customer feedback
No customer reviews yet
We publish genuine, moderated customer reviews only. None have been published for this product yet — we do not display invented ratings.
Be the first to review it →Frequently asked questions
How much does the bundle save?
At our 2026-07-24 check, $6.00 against the two components, or about 9%. At the regular prices recorded that day there was no saving: $74.00 equalled the component total. Verify live prices before buying.
Is the bundle a different formula?
No. It is the same berry shampoo and berry conditioner, sold together.
Which directions should I follow for the conditioner?
The bundle page instructions — focus on mid-lengths to ends, leave in 2–3 minutes, rinse. The standalone conditioner page describes lathering, which appears to be shampoo copy carried across in error.
Evidence notes
Bundle contents, combined price, the 0.1% GHK-Cu disclosure and the two-step directions come from The Glow Hair Stack product page. Component prices come from the individual shampoo and conditioner pages. All were checked on the date shown at the top of this page.
The $6.00 saving and the $6.13 per 100 mL figure are our own arithmetic from those published prices and volumes.
Sources and evidence
Catalogue membership, listed price, sale status and stock state as observed on the checked date; verify all commercial details on the live store.
Checked 2026-07-24 · brand shop listing
Bundle contents, combined price, 0.1% GHK-Cu disclosure and two-step directions.
Checked 2026-07-24 · brand product page
Amplified Glow Editorial Team
Product research and editorial standards
This team works for Amplified Glow, the company that makes and sells the products reviewed here. Editorial pay isn’t tied to sales, review sentiment, or customer ratings — so when a product is thinly documented or has a drawback, the review says so.
Spotted something wrong? Request a correction.
Related comparisons
Individual Products vs a Haircare Bundle
Read the dated editorial analysis, then verify current price and availability on the live store.
Compare attributes →Product comparisonBerry vs Lavender Amplified Glow Haircare
Read the dated editorial analysis, then verify current price and availability on the live store.
Compare attributes →Related ingredients
GHK-Cu
GHK-Cu is a small peptide complexed with copper. In cosmetics it appears under the INCI name Copper Tripeptide-1 and is used as a conditioning ingredient. It is the ingredient every Amplified Glow copper peptide product is built around, and the only one for which the brand publishes concentrations — between 0.1% and 0.15% depending on the product.
Read the ingredient page →Structural protein, or a hydrolysed fraction of oneKeratin
"Keratin" on a label isn’t a single ingredient. Several versions exist — hydrolyzed keratin, keratin amino acids, and others — differing in source and size. Amplified Glow names keratin in four haircare products without saying which form or source, so the exact ingredient isn’t confirmed.
Read the ingredient page →Provitamin B5 alcoholPanthenol
Panthenol, often labelled pro-vitamin B5, is used in cosmetics as a humectant and conditioning agent. It appears in four Amplified Glow products across skincare and haircare. No concentration is published for any of them.
Read the ingredient page →Related guides
Shampoo and conditioner order
Shampoo first, conditioner second. Shampoo cleanses the scalp and lifts buildup; conditioner is applied to mid-lengths and ends afterwards and left for a couple of minutes before rinsing. The order matters because the two products do opposite things — cleansing removes, conditioning deposits — and doing them the other way round removes what you just deposited.
Read the guide →GuideHow to interpret price per ounce
Read the dated editorial analysis, then verify current price and availability on the live store.
Read the guide →