Skip to product information
1 of 5

K18 Damage Shield pH Protective Shampoo Jumbo 473ml

K18 Damage Shield pH Protective Shampoo Jumbo 473ml

Sale price $94.95 Regular price SAVE $-94.95
Regular price $94.95
Sale Sold Out

pay in 4 installments of $23.73

In stock

Maintain stronger, healthier-looking hair with the limited edition K18 DAMAGE SHIELD pH Protective Shampoo Jumbo 437ml, an oversized version of the everyday essential designed to gently cleanse while helping protect against daily damage.

This colour-safe, pH-optimised shampoo is powered by K18’s patented peptide technology to effectively remove dirt, oil and buildup without disrupting the hair or scalp. The balanced formula works in harmony with your hair’s natural pH to minimise cuticle swelling, helping to reduce frizz, preserve colour and enhance overall shine.

Why you’ll love it:

  • Limited edition jumbo 437ml size for long-term use
  • Gentle, daily-use shampoo that won’t strip or dry out hair
  • pH-balanced formula helps protect hair structure and reduce frizz
  • Colour-safe and suitable for all hair types
  • Supports a healthy scalp with microbiome-friendly technology
  • Powered by K18PEPTIDE™ to help maintain hair strength

Key benefits:

  • pH-optimised cleansing: helps reduce excess cuticle swelling during washing, which can lead to frizz, dullness and damage.
  • Daily gentle cleanse: effectively removes dirt and oil without over-drying or disrupting the scalp barrier.
  • Stronger-feeling hair: K18PEPTIDE™ helps minimise protein loss to support healthier, more resilient strands.
  • Colour protection: helps preserve colour vibrancy while enhancing shine and smoothness.
  • Scalp-friendly formula: microbiome-conscious cleansing helps maintain a balanced, healthy scalp environment.

Perfect for: daily washing, colour-treated hair, frizz-prone or damaged hair, and anyone wanting a gentle, strengthening cleanse that supports long-term hair health.

View full details

Product Information

Directions

Ingredients

Shipping

Australian Orders

Australian OrdersAustralia Post Standard Delivery* (2-7 Business Days

Orders under $50 - $7.99

Orders over $50 Free

Australia Post Express Delivery** (1-3 Business Days)

Orders under $50 - $9.99

Orders over $50 - $5.99

 Postage Insurance $2.95

Complete protection for loss or damage during transit*

See more shipping info

Returns & Refunds

We accept returns on unused, unopened items within 30 days of delivery.
Faulty, damaged or reaction-related returns may be eligible for a refund, exchange or store credit — conditions apply.

Please note:
- Products must be in original condition
- Return shipping costs are the customer’s responsibility (unless the item is faulty or sent in error)
- Makeup and fragrance are not eligible for change-of-mind returns

Contact us at customerservice@ry.com.au to request a return.
View our full Returns & Refunds Policy Here

Skin Consult

One-on-One Free Video Skin Consultation

Need expert advice? Speak face-to-face with a qualified skin therapist in real time — from the comfort of your home.

Our free live video consultation connects you with a trained professional who can assess your skin, answer your questions, and recommend the right products just for you.

No bots. No pressure. Just real, personalised skincare advice.

Chat Now