FREE DELIVERY ON ORDERS; US OVER $130, UK OVER £50, EU OVER €115

FREE Signature Hair Clip, Soft Hold, Snag-Free Comfort with Orders above $75 (over $33 in value)

What is Dioic Acid?

A potent yet uncommon hyperpigmentation and clarifying ingredient.

Skin Education | 

READERS’ PICKS

2 min read 

 

When developing the formulation for The Complexion Clarifying Accelerator, the aim was to work with multi action ingredients that would work synergistically to target several skin concerns.

One key element of the resurfacing compound was to select exfoliants and enzymes that would resurface the skin and simultaneously deliver anti-pigmentation agents. This would then enable the enzyme acid compound to work further in lifting discolourations, targeting hyperpigmentation and reducing the appearance of those residual dark marks (post-inflammatory hyperpigmentation) that occur after acne. For these reasons, selecting one of the most underrated ingredients Dioic Acid was a no brainer.

This is where Dioic Acid comes in….

 

What is Dioic Acid?

Dioic Acid otherwise known as Octadecenedioic Acid (Dicarboxylic Acid), is used in our formulations and obtained by an eco-designed process from Sunflower Seeds (Sunflower seeds + Oleic Acid = Octadecenedioic Acid). This vegetable-derived ingredient was discovered after research into alternatives to Azelaic Acid (an ingredient known to reduce the symptoms of acne and rosacea as well as targeting hyperpigmentation). In the search for an alternative that could deliver effective results at lower concentrations than 20% Azelaic Acid, Dioic Acid was developed. Structurally similar to Azelaic Acid (both acids are Dicarboxylic Acid), one aspect that makes Dioic Acid interesting, is its ability to not only target hyperpigmentation, fade dark spots and even skin tone but also regulate sebum and combat blemishes whilst minimising risk of irritation.

What are the benefits?

Dioic Acid helps brighten, balance and support even skin tone as it acts along the melanin pathway to regulate melanin and its transfer across skin cells - helping fade hyperpigmentation, dark spots and balance uneven skin tones.

A study comparing twice daily application of 1% Dioic acid to 2% Hydroquinone cream in 96 Mexican female subjects with melasma, showed no significant difference between treatments. Both agents demonstrated equal efficacy in reducing melasma by over 40% after 12 weeks of treatment. However, a notable side effect with hydroquinone is itching. In addition to its brightening effects, Dioic Acid has also been shown to reduce excess sebum whilst targeting acne-causing bacteria. Although more research studies are required to support Octadecenedioic Acid efficacy, we see this ingredient as a staple ingredient in Sachi Skin in our fight against hyperpigmentation and breakouts.

The Complexion Clarifying Accelerator

contains Dioic Acid in combination with Mandelic Acid, Salicylic Acid, other brighteners, antioxidants and barrier supporting ingredients to target hyperpigmentation, stubborn discolourations, enlarged pores, congestion, breakouts, irregular texture, fine lines and blackheads to reveal skin that illuminates with clarity.

The Enzyme Acid System

 

Real People, Real Results

      

See our multitasking Complexion Clarifying Accelerator here. 

 

 

References: Efficacy of Dioic Acid compared with Hydroquinone in the treatment of melasma; Andres Tirado-Sanchez et al 2009.

Let's talk

YOU MIGHT BE INTERESTED IN

Search

Shopping Cart

Your cart is currently empty.
Shop now
  • Product Reviews
  • Site Reviews
06 Apr 2025
Nadine N.
Ireland
A very product for hyperpigmentation
Triphala Pigmentation Corrector - 60ml
04 Apr 2025
Tess
United Kingdom
Really enjoyed this serum. It feels lovely to apply. Absorbs really easily and is really hydrating. I definitely noticed that it made a really difference to brightness and faded some stubborn dark spots.
Triphala Pigmentation Corrector - 30ml
13 Mar 2025
Rátiana R.
United States
I’ve gotten the fastest results out of every other hyperpigmentation product with this. I tested it on a new acne scar right above my eyebrow and it faded fast. Noticed results within a week. Love it. I have tried other things since running out, and I can’t help but to return to Sachi Skin.
Triphala Pigmentation Corrector - 30ml
07 Mar 2025
Empress J.
United Kingdom
Currently I’m the break out stage, heals the breakouts well, added hydration and healing hyperpigmentation
Ursolic Acid & Retinal Overnight Reform - 30ml
05 Mar 2025
Arushi R.
United Kingdom
Great using the product
Triphala Pigmentation Corrector - 30ml
02 Mar 2025
Paola O.
United States
I wasn’t expecting much from this cleanser, especially after trying so many that either didn’t clean well enough or left my skin stripped. But this one completely changed my routine. It removes all the gunk without being harsh, leaving my skin feeling soft, nourished, and unbelievably smooth. My...I wasn’t expecting much from this cleanser, especially after trying so many that either didn’t clean well enough or left my skin stripped. But this one completely changed my routine. It removes all the gunk without being harsh, leaving my skin feeling soft, nourished, and unbelievably smooth. My redness has improved so much, and I’ve had fewer breakouts since adding it—something I genuinely didn’t think a cleanser alone could do. I was hesitant because of the price, but now I know it’s worth every penny. I’ll definitely repurchase because my skin has never looked or felt this good!
Saponins Cream Cleanser - 120ml
04 Feb 2025
Jeanne A.
United States
I really like this product for ease of use and no irritation. I think I am seeing some subtle results but may be too early to tell
Ursolic Acid & Retinal Overnight Reform - 30ml
30 Jan 2025
Ema
United Kingdom
The best serum ever!
Triphala Pigmentation Corrector - 30ml
28 Jan 2025
Sima
United Kingdom
I am 5 months Postpartum and hormonal changes has affected my skin. Particularly one area has become sensitive and can get irritated easily. This cleanser is really gentle and feels lovely on the skin. I am really pleased with how much dirt it manages to lift up without me having to scrub. The...I am 5 months Postpartum and hormonal changes has affected my skin. Particularly one area has become sensitive and can get irritated easily. This cleanser is really gentle and feels lovely on the skin. I am really pleased with how much dirt it manages to lift up without me having to scrub. The gentle massage motion is enough to get a goodbye cleanse. Love it!
Saponins Cream Cleanser - 120ml
10 Jan 2025
Daryl P.
Hong Kong
Effective and lovely to use
Triphala Pigmentation Corrector - 30ml
08 Jan 2025
Karen C.
United States
Fabulous product works to make the skin more even tone without irritation.
You Set The Tone Duo
08 Jan 2025
Helin A.
United Kingdom
I absolutely love the Retinal Overnight reform cream and would definitely purchase again! It glides over the skin, and leaves you feeling hydrated and moisturised. The texture is smooth and easy to use, and the packing was so pretty 💕💗
Ursolic Acid & Retinal Overnight Reform - 30ml
07 Jan 2025
Ada
United States
This CCA and triphala pigmentation corrector combination is really addressing my concerns!!! I noticed gradually that the acne wasnt so much, then it was gone. My skin is now so smooth, and the hyperpigmentation is fading.
You Set The Tone Duo
01 Jan 2025
Nafisat A.
United Kingdom
I love these two product so much They have become a staple and I love how gentle but effective they are . 10/10
You Set the Tone Duo II
29 Dec 2024
Heather B.
United States
I am a dermatology PA-C and I have tried countless products throughout my career. I was using a 12% hydroquinone product but it made my eyes burn if it got too close. I have heard about this product for years and finally pulled the trigger. It truly delivers results. I am astonished at how visibly...I am a dermatology PA-C and I have tried countless products throughout my career. I was using a 12% hydroquinone product but it made my eyes burn if it got too close. I have heard about this product for years and finally pulled the trigger. It truly delivers results. I am astonished at how visibly brighter my skin is. I want to tell everyone about this product. The ingredients are excellent and it keeps it promise. Please try it if pigment is an issue for you. You won’t regret it.
Triphala Pigmentation Corrector - 30ml
29 Dec 2024
Heather B.
United States
Really nice journal.
States of Change AM/PM Daily Journal
25 Dec 2024
Jane B.
United States
Shipping was fast considering it came from overseas. Love the products so far. I can’t tell a difference in hyperpigmentation but I didn’t take my products with me on vacation and can tell a difference in my overall skin tone!
Triphala Pigmentation Corrector - 30ml
21 Dec 2024
Amanda S.
United States
A little goes a long way, and it’s so soothing and hydrating to my chronically dry skin. It is perfectly moisturizing without breaking me out. I love it and will never be without it now!
Pro Resilience serum - 30ml
12 Dec 2024
Chika
United Kingdom
Hi, My thoughts on this product, is amazing although, for me I have a dry skin it drys out my skin abit more sensitive like sometimes I feel a tingling sensationI use mine 3time on a roll . Stil new to give a comprehensive review. As I am yet to see my pigment and melasma fades
Triphala Pigmentation Corrector - 30ml
03 Dec 2024
Pamela
United States
Beautiful formulas. Repurchase during Black Friday offer.
Soothe & Glow Set
03 Dec 2024
Pamela
United States
Excellent products, a repurchase for me during the Black Friday offer.
You Set the Tone Duo II
30 Nov 2024
Samantha
United States
This has been my favorite AHA exfoliant for a few years. The formula is innovative and is unlike anything I've tried before. It's gentle, hydrating, yet I can still tell that it's helping with clearing out my congestion. Because it's primarily mandelic acid, the exfoliation and results definitely...This has been my favorite AHA exfoliant for a few years. The formula is innovative and is unlike anything I've tried before. It's gentle, hydrating, yet I can still tell that it's helping with clearing out my congestion. Because it's primarily mandelic acid, the exfoliation and results definitely takes a little longer, but the results are worth it!
Complexion Clarifying Accelerator - 30ml
26 Nov 2024
Corris N.
United States
I haven't had any negative side effects with using this product & I have noticed some improvement with fine lines.
Ursolic Acid & Retinal Overnight Reform - 30ml
26 Nov 2024
Mary M.
United Kingdom
I have been using this product, as well as the serum, for about a year now, and I can absolutely say that you get what you pay for. Everywhere I go, people comment on my skin - it looks plump, even, glowy and less bumpy. I have never had such reviews before, so I know I am doing something right. I...I have been using this product, as well as the serum, for about a year now, and I can absolutely say that you get what you pay for. Everywhere I go, people comment on my skin - it looks plump, even, glowy and less bumpy. I have never had such reviews before, so I know I am doing something right. I look younger, and I go out confidently now without make-up, too, which is great for my wallet. As a woman in my late 30s, skin care is a priority, and I am so glad I have come across this brand now.
Triphala Pigmentation Corrector - 30ml
24 Nov 2024
Nkeiruka A.
United States
It was really good. I really enjoy using it and this is my 3rd bottle
Triphala Pigmentation Corrector - 60ml
22 Nov 2024
Farida N.
United States
Odorless and foams well for a good clean. Face feels very clean/ not stripped after using this cleanser.
Saponins Cream Cleanser - 120ml
22 Nov 2024
Farida N.
United States
Safe gradual brightening and skin clarity,if that’s what you are looking for buy this product. It goes on easy and plays well with other products as well.
Triphala Pigmentation Corrector - 30ml
22 Nov 2024
Sandra m.
United Kingdom
This a formula that gives comfort while cleansing. Doesn’t disrupt the skin in anyway and leves it soft and hydrated after removing all impurities
Saponins Cream Cleanser - 120ml (Influencer)
21 Nov 2024
Oluwatosin I.
United States
I got this for my boyfriend and he's prone to acne and has big pimples but since he started using the pigmentation corrector, he hasn't seen any pimples since then. He has clear skin and no big pores. I'm glad I got this for him and this the 3rd or 4th bottle I've got now.
You Set The Tone Duo
18 Nov 2024
Cee
Canada
I had a number of friends tell me I needed this serum in my skincare arsenal, but it wasn't until I tried it myself that I understood why they raved about it. The difference in my skin was visible - it looked more radiant, smoother and better than it has for years. I will repurchase again and again...I had a number of friends tell me I needed this serum in my skincare arsenal, but it wasn't until I tried it myself that I understood why they raved about it. The difference in my skin was visible - it looked more radiant, smoother and better than it has for years. I will repurchase again and again and again! Sachi, please don't ever discontinue this incredible product.
Ursolic Acid & Retinal Overnight Reform - 30ml
REVIEWS