Leitin | Formulator
Region: AU
Monday 11 May 2026 04:13:35 GMT
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Comments
lannajusttrying :
Are you going to give us the alternative product to mix it with? I have it in the raw and I was planning on mixing it with the ordinary hyaluronic, but now what?
2026-05-11 08:40:12
21
Lorraine | Queenager 🧴💄🇦🇺 :
I can’t say now I’ve seen it all, but every day I see something that makes me thing yeah I don’t know enough to play around with this
2026-05-11 05:47:11
4
The Quiet Powerhouse ✨ :
Oh my heavens I cannot cope with some of the posts you see. I saw an esthetician say this morning that you can only use Tret or Taz for six months maximum and then you have to stop for 6 months as it thins your skin!!!! 🤦🏼♀️🤦🏼♀️🤦🏼♀️🤦🏼♀️
2026-05-11 06:36:59
8
Kelly White :
Are the GHK-cu molecules too big to penetrate the skin without an encapsulation and delivery method?
2026-05-11 07:58:46
4
Susana 🪷 :
The Ordinary already formulates a Multi Peptide + Copper Peptides serum, so formulation compatibility is probably a little more nuanced than simply saying an ingredient “competes with metal ions” and automatically destabilizes copper peptides.
2026-05-15 23:27:19
2
🌸BSan727 :
Thank you! I have thought about doing something similar then I thought I’m not a formulator and I can’t gamble with my skin.
2026-05-11 05:10:31
1
Nikki | 🇦🇺 50+ Beauty & Life :
Omg 😳 I don’t understand why anyone would try doing this? Seriously, we are not skincare formulators and most people wouldn’t know how all these ingredients react together. Personally, I would only be trusting an expert, like Leitin clearly is, with my skin 😊
2026-05-11 11:57:37
2
User283648 :
Iv putting it straight on the scalp without mixing it with anything
2026-08-07 11:08:43
0
Robyn :
Yea Nah Stuff That 😳
2026-05-11 05:41:16
1
Diff_shades_of_brown :
I love you videos! You are a great teacher
2026-05-11 11:04:43
1
Flying solo :
What about the marine water based one .
2026-07-02 14:29:46
0
Nurse JMA (Wellness) :
can u recommend a good serum to combine with ghkcu?
2026-06-28 14:14:24
0
gabrielleking118 :
You know you’re stuff. Love your content 😁😁😁
2026-05-11 05:35:04
1
Marie-Antoinette :
🙌 love your content Leitin 🤩
2026-05-13 13:40:38
1
kazee :
Exactly! I formulate and would never use premixes, you have no idea of the percentages. Also always measure everything with a precision scale.
2026-06-29 07:35:22
0
The Aviation Flight Club ✈️🧬 :
well said! 100% spot on 🙏🫶😊 thank you for sharing!
2026-05-11 11:26:10
0
LucyCat27 :
Between 4 and 7 what?
2026-06-29 09:07:53
0
Kimberly Sanchez :
great to know! 💕
2026-05-18 22:34:29
0
🆎⚡️Angie_Baby⚡️🆎 :
I literally watched this and was like oh yeah you could but I wouldn’t but good for you babes lol
2026-05-11 22:35:32
0
Shan :
I shake my head when I see people doing this. 🤷🏻♂️🤦🏽♂️🤯
2026-05-12 23:06:17
0
ScotchGirl :
can you combine it with snap 8 instead of ghkcu
2026-08-09 21:29:29
0
Charlene | Skincare Reviews :
My Australian accent got the better of me when I reacted with an "oh nauur" seeing that. 💀
2026-05-11 10:48:57
1
user4193795016678 :
how about AHK CU?
2026-05-17 13:39:33
1
The_Poshest_Bogan_You_Know :
I was waiting for BOOM 💥
2026-05-14 12:52:01
0
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