5% Lactic Acid

Refresh and renew with our 5% lactic acid tonic - a mild AHA treatment that gently exfoliates, brightens, and hydrates for smoother, more radiant skin. This leave-on toner dissolves dead skin cells, fades dullness and dark spots, reduces fine lines, and boosts natural moisture retention without irritation. Perfect for sensitive, dry, or first-time acid users seeking glowing texture and even tone.

Key Benefits of This 5% Lactic Acid Tonic

Mild Chemical Exfoliation: Clears dead cells for radiant, even-toned skin.
Hydration Boost: Increases moisture retention for plump, dewy results.
Brightening & Anti-Aging: Reduces fine lines, dark spots, and dullness gently.
Sensitive-Skin Friendly: Low irritation potential; suitable for daily use when introduced slowly.
Texture Refinement: Smooths roughness, minimises pores, and improves overall feel.
This water-based tonic format makes it lightweight, fast-absorbing, and easy to layer-ideal as a post-cleanse step before serums or moisturisers.

Seeking effective exfoliation without the sting? Our 5% lactic acid treatment tonic delivers the perfect entry-level AHA experience. Lactic acid - a naturally derived, milk-based alpha hydroxy acid - stands out as one of the gentlest yet most rewarding exfoliants, especially for sensitive, dry, or reactive skin. At 5%, this concentration provides noticeable brightening, texture refinement, and hydration support while minimising irritation risks associated with stronger AHAs like glycolic acid.

Why 5% Lactic Acid Is Ideal for Gentle Yet Visible Results

Lactic acid works by loosening the bonds between dead skin cells on the surface, promoting faster cell turnover for a fresher, smoother complexion. Unlike harsher acids, it also functions as a humectant, drawing in and helping retain moisture (part of the skin's natural moisturising factor), which leaves skin softer, plumper, and less prone to dryness. Dermatological insights and user studies highlight that 5% lactic acid visibly:

Improves brightness and evens tone by fading dullness, hyperpigmentation, and mild dark spots

Smooths fine lines and rough texture for a more refined appearance

Enhances hydration and barrier function, making it excellent for dry or dehydrated skin

Gently unclogs pores and reduces bumpy texture without over-stripping

At this level, it's often recommended for beginners or sensitive types, with many seeing brighter, softer skin in 4-8 weeks of consistent use.

How to use :

After cleansing, apply with a cotton pad or clean hands to face and neck (avoid eyes). Pat gently; no rinsing needed. Use AM/PM, starting with every other day to build tolerance, then daily. Always follow with moisturiser and broad-spectrum SPF 30+ in the morning (AHAs increase sun sensitivity). Pair with hydrating ingredients like hyaluronic acid or ceramides for extra comfort.

Who Should Use This Treatment Tonic?

Sensitive, dry, or dehydrated skin needing gentle exfoliation

Beginners to chemical exfoliants or those irritated by stronger AHAs

Dull, uneven, or aging skin targeting brightness and smoothness

Anyone wanting hydration alongside mild resurfacing

All skin tones seeking safe, effective tone-up care

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