Barrier & Peptides
Baseline
10% Niacinamide + 1% Zinc
4.7 · 3,388 reviewsRated 4.7 out of 5 from 3388 reviews
£4230 ml
Bestseller
Exfoliants
Undertow
2% Salicylic Clarifying Fluid
4.7 · 2,264 reviewsRated 4.7 out of 5 from 2264 reviews
In stockOil-soluble acid that works inside the pore, not on top of it.
- Use
- PM
- Strength
- Moderate
- Size
- 30 ml
- Clears blackheads and closed comedones at the source
- Reduces the number of new breakouts over four weeks
- Low-alcohol base avoids the strip-and-rebound cycle
1
£27 more for free delivery
Order before 4pm UK time and it ships today
90-day returns, opened or not
Measured results
- 83%
- Fewer breakouts
- Self-assessed, 6 weeks, n=178
- 4 wk
- To clearer pores
- Standardised photography
- 2%
- Salicylic acid
- The maximum permitted leave-on dose
What is doing the work
Key actives, at declared doses
Everything below is listed as a percentage of the finished formula, not as a position on an ingredient list.
- 01
2%
Salicylic Acid
Dissolves congestion inside the pore lining
- 02
1%
Zinc PCA
Regulates sebum output over time
- 03
3%
Willow Bark Extract
Anti-inflammatory support for active breakouts
How to use
In this order, at this cadence.
PMModerate30 ml
- 01
Every other night to start, on dry skin, focusing on congested areas.
- 02
Can be used on the back and chest as well as the face.
- 03
Alternate nights with retinoids rather than layering them.
- 04
Follow with a light moisturiser even if your skin is oily.
What it looks like
The bottle, the texture, the routine
Photography that shows the product as it actually arrives and how it goes on.
Undertow unboxed, 4:5
Undertow texture on skin, 4:5
Undertow in a routine, 4:5
Batch code
AX-BHA2
Size
30 ml
Made without
Fragrance, dyes, essential oils
Directions & disclosure
Everything on the box, and then some.
Batch AX-BHA2 · Certificate of analysis available on request
Aqua, Salicylic Acid, Butylene Glycol, Hamamelis Virginiana Extract, Salix Alba Bark Extract, Zinc PCA, Panthenol, Allantoin, Polysorbate 20, Sodium Hydroxide, Phenoxyethanol, Ethylhexylglycerin.
Fragrance-free, essential-oil-free and dye-free. Never tested on animals.
Compare
Every exfoliants formula, side by side
Same category, different strengths. The right one is usually the gentlest that still does the job.
| Formula | Strength | Use | Size | Price | |
|---|---|---|---|---|---|
| Reset 1010% Glycolic Resurfacing Fluid | Moderate | PM | 30 ml | £54 | View |
| Undertow2% Salicylic Clarifying Fluid | Moderate | PM | 30 ml | £48 | You are here |
| Soft Focus8% Mandelic Acid Serum | Gentle | PM | 30 ml | £52 | View |
Reviews
What people report back
4.7
4.7Rated 4.7 out of 5
2,264 reviews
- 5 star82%
- 4 star13%
- 3 star3%
- 2 star1%
- 1 star1%
- 5.0Rated 5 out of 5
Blackheads on my nose, gone
Four weeks of every other night. It has not stripped my skin the way other BHAs have.
- 5.0Rated 5 out of 5
Works on my back too
Using it on my shoulders and chest as well. Far fewer breakouts than before.
Questions
Before you buy it.
Not covered here? Our team answers within one working day.
Layers well with