Copper Tripeptide-1 is a copper peptide found naturally in young skin, and it’s the hero active in Blue Bounce. Our natural levels drop from our 30s, which is part of why skin starts to look less firm and bouncy. Blue Bounce tops it back up in a lightweight serum that’s suitable for sensitive skin. As with any new skincare, patch test first.

Yes. Blue Bounce is a gentle Copper Tripeptide-1 and hyaluronic serum with no retinol or acids, so it suits sensitive skin. As with any new skincare, we always advise a patch test first — apply a small amount to your inner arm and wait 24 hours before using on your face.

Cleanse and pat dry. Press 2–3 drops of Blue Bounce into your face and neck and let it absorb for 1–2 minutes. Follow with Skin Shield Barrier Cream to lock it in. Use any time of day, morning or night — if you're applying in the morning, finish with SPF. It layers happily under your usual moisturiser or make-up.

Most women notice skin feels smoother and more hydrated within the first week. Firmness and bounce build with consistent use — our test volunteers reported visible improvement in firmness and fine lines by week four. Copper peptides work by supporting your skin's own collagen and elastin, so results keep improving the longer you use it.

Blue Bounce Copper Peptide Serum: Aqua (Water), Niacinamide, Glycerine, Sodium Hyaluronate, Copper Tripeptide-1, Caprylyl Glycol, Phenoxyethanol, Ethylhexylglycerin.

Skin Shield Barrier Cream: Aqua (Water), Helianthus Annuus Seed Oil (Sunflower Oil), Glycerin, Cetearyl Alcohol, Caprylic/Capric Triglyceride, Prunus Amygdalus Dulcis Oil (Almond Sweet Oil), Butyrospermum Parkii Butter (Shea Butter), Macadamia Integrifolia Seed Oil (Macadamia Oil), Phenoxyethanol, Tocopherol (Vitamin E Natural), Ceteareth-20, Stearic Acid, Caprylyl Glycol, Carbomer, Dimethicone, Butylene Glycol, Sodium Hydroxide, Aloe Barbadensis Leaf Juice Powder (Aloe Vera Leaf Juice Powder), Hydrolyzed Marine Collagen, Ethylhexylglycerin. Contains tree nut oils (almond, macadamia) and marine collagen.

Storage: keep Blue Bounce out of direct sunlight — prolonged light exposure fades its signature blue colour. Store Skin Shield below 25°C away from direct sunlight.

30-day money-back guarantee. If Blue Bounce isn't for you, contact us at customerservice@krepubliq.com within 30 days of purchase and we'll gladly refund you.

Shipping: Choose free standard shipping or a free mystery gift at checkout. Standard orders are dispatched within 4 business days. Need it sooner? Choose Express ($14.99, dispatched within 24 hours) or Priority Dispatch (1–2 business days) at checkout. We ship worldwide and international shipping times are shown at checkout.

Yes. Blue Bounce, Skin Shield and every K Republiq product are cruelty free. We do not sell in countries that require animal testing at any level.