7% Polyhydroxy Tonic

Gently renew and hydrate with our 7% Polyhydroxy treatment tonic - powered by gluconolactone and lactobionic acid for next-level exfoliation that's kinder than traditional AHAs. This leave-on tonic smooths texture, brightens dullness, fades fine lines, reduces hyperpigmentation and strengthens the skin barrier while delivering deep, long-lasting moisture. Ideal for sensitive, dry, rosacea-prone or mature skin craving radiance without stinging or redness.

Key Benefits of This 7% PHA Treatment Tonic

Mild Yet Effective Resurfacing - Smooths roughness, refines pores and boosts glow
Deep, Multi-Layer Hydration - Plumps skin and prevents dryness or tightness
Brightening & Tone Evening - Reduces dark spots, post-acne marks and dullness
Anti-Ageing Support - Softens fine lines, enhances firmness and protects collagen
Calming & Barrier-Friendly - Soothes redness and strengthens resilience
The lightweight, watery texture absorbs quickly and layers seamlessly - ideal as a post-cleanse step before serums or moisturisers.
Tired of harsh exfoliants that leave skin red, tight or flaky? Our 7% PHA treatment tonic harnesses the power of polyhydroxy acids - specifically gluconolactone and lactobionic acid - to deliver effective yet exceptionally gentle resurfacing, hydration and anti-ageing benefits. PHAs represent the evolution of chemical exfoliation: larger molecular size means they work mostly on the skin's surface, providing smoother texture, brighter tone and improved resilience with far less irritation than AHAs or BHAs. Perfect for sensitive, dry, rosacea-prone, eczema-prone or mature skin in 2026's gentle skincare era.

Why 7% PHA (Gluconolactone + Lactobionic Acid) Is a Sensitive-Skin Saviour

Polyhydroxy acids like gluconolactone (a naturally occurring sugar acid) and lactobionic acid (derived from lactose) offer multi-tasking magic:

Gentle Exfoliation - They loosen dead skin cells to promote turnover, revealing fresher, smoother skin without deep penetration or stinging.

Superior Hydration - Both act as powerful humectants, attracting and retaining moisture (often outperforming traditional AHAs), reducing transepidermal water loss and leaving skin plump and dewy.

Antioxidant Protection - Gluconolactone in particular scavenges free radicals, helping defend against environmental damage, pollution and UV-induced stress.

Barrier Strengthening & Soothing - They support ceramide production and calm inflammation, making them ideal for reactive or compromised skin.

Brightening & Anti-Ageing - Fade hyperpigmentation, dark spots and dullness while softening fine lines and improving elasticity over time.

At 7% total PHA - a clinically inspired, effective yet approachable level - this tonic provides noticeable improvements in texture, radiance, hydration and evenness within 4-8 weeks, with progressive benefits to fine lines and barrier health. Dermatological insights confirm PHAs deliver anti-ageing and brightening results comparable to gentler AHAs but with minimal side effects - no increased sun sensitivity and excellent tolerance for daily use.

How to use :

After cleansing, apply with a cotton pad or to clean hands to face and neck (avoid eyes). Pat gently; no rinsing needed. Use AM/PM, starting every other day if new to acids, then daily as tolerated. Always follow with moisturiser and broad-spectrum SPF 30+ in the morning (though PHAs are low-risk for photosensitivity). Pairs beautifully with hyaluronic acid, niacinamide, peptides or ceramides; avoid strong retinoids or other acids initially if sensitive.

Who Should Use This Treatment Tonic?

Sensitive, reactive or rosacea-prone skin needing gentle exfoliation

Dry, dehydrated or mature types craving hydration alongside renewal

Those irritated by glycolic, lactic or salicylic acid

Anyone seeking brighter, smoother skin with anti-ageing perks

All skin tones wanting safe, daily resurfacing

Patch test first. Consult a dermatologist if pregnant, breastfeeding or using prescription actives.

Fundamentals Skincare is

Vegan friendly
Cruelty-free
Cosmeceutical grade
Fragrance-free
Made in South Africa

What's in the box
1 x Fundamentals 100ml plastic bottle with white screw cap