Copper Amino Isolate Serum 3 1:1 (CAIS3) — Reddit Reviews
by NIOD
Updated August 28, 2026
Copper peptides serum reputed to reduce redness and fine lines; may cause breakouts.
What the community says
This serum blends copper peptides aimed at improving fine lines and calming rosacea-related redness. It is favored for use after red light treatments but may cause breakouts, especially when used daily as a leave-on. Beginners should start with infrequent applications to gauge tolerance.
What this means for you
What people love
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Product details
Skin type data limited
Where to buy
Real Reddit threads — 4 mentions across 4 threads
NIOD Copper Amino Isolate Serum 3 1:1 (CAIS3) on Reddit, in one place — 4 threads from r/tretinoin, r/AsianBeauty and 1 more, summarized.
“Morning: Niod CAIS3”
Positive
“If my skin is feeling angry that night I’ll skip the Fabior and do another dose of CAIS3.”
Positive
“I was using it everyday as a leave on and I kept getting random breakouts.”
Positive
“**Serum:** NIOD CAIS 3 - just started twice a week”
Positive
“I stand about 10-18 inches back and follow the red light session with NIOD CAIS serum.”
Mentioned
“There are some studies suggesting copper and red light together being a good combo for skin.”
Mentioned
“My fine lines are smaller and my skin is slightly less red (I have rosacea).”
Mentioned
“NIOD’s CAIS serum to begin with.”
Mentioned
“I’ve narrowed down to the copper peptides serum from Ordinary or NIOD’s CAIS serum”
Mentioned
“I’ve been looking at this too.”
Mentioned