Sugar Detox

Ten days of lower-sugar meals. Glowcast checks each meal's sugar impact, so you know which ones pass.

Start the challenge QR code that opens Glowcast on the App Store

On iPhone: $4.99 a week, $14.99 a month or $69.99 a year, with a 7-day trial on the yearly plan.

Avocados, blackberries, nuts and dark chocolate — sweet, but make it slow

the rule:

Every meal low in sugar impact, for 10 days.

Every meal and snack counts. Glowcast checks each one's sugar impact for you.

slow carbs
fibre
less added sugar

Length: 10 days
Level: Advanced
You count: Sugar impact

What's a slower swap?

Slow carbs raise blood sugar gently. Fast ones spike it. Easy swaps:

Oat porridge
instead of cornflakes
Grainy bread
instead of white bread
Chapatti
instead of boiled potato

Why cut back on sugar for your skin?

Swapping fast carbs for slower ones meant fewer breakouts in two small trials. Ten days is your test run, not the whole story.

the nerdy bit

In the best-known trial, 43 young men went on a low-glycemic-load diet or a standard one for 12 weeks, and lesion counts fell by 23.5 on the low-GL diet against 12.0 on the standard one (Smith et al., 2007). A Korean trial of 32 people found fewer lesions and, in skin samples, smaller oil glands after 10 weeks on a low-GL diet (Kwon et al., 2012). The American Academy of Dermatology puts it this way: "Findings from small studies suggest that following a low-glycemic diet may reduce the amount of acne you have" (AAD). The limits, in short: an 8-week trial of 58 teenage boys found both diets helped and couldn't tell them apart (Reynolds et al., 2010), the low-GL group in the first trial also lost about 2.9 kg, and the AAD's 2024 acne guidelines found the evidence too thin for a diet recommendation (AAD, 2024).

steal this

Day 1 ideas

Breakfast
Rolled oats with berries
Lunch
Salmon and quinoa bowl
Dinner
Lentil dhal

Glowcast checks each one for you

the other 9 days?

Days 2 to 10 unlock in the app

Day 1done ✓
Day 2
Day 3
Day 4
Day 5
Day 6
Day 7
Day 8
Day 9
Day 10
badge at the end

Snap each meal and Glowcast checks its sugar impact
Your streak and progress ring, day by day
115 glow recipes for when you're stuck

Start the challenge

Quick questions

Does every snack count?

Yes. Every meal and snack you log that day needs to pass Glowcast's sugar-impact check.

Why only 10 days?

It's a reset, not a diet. The diet trials ran 8 to 12 weeks, so think of this as the start of a habit.

What if I miss a day?

Your streak resets and the challenge keeps going, but the badge needs every day, so a missed day means no badge this time.

Do I have to count calories?

No. Glowcast looks at how fast a meal raises your blood sugar, not its calories.

Food inspo, not medical advice.

Sources

Smith RN et al. A low-glycemic-load diet improves symptoms in acne vulgaris patients: a randomized controlled trial. Am J Clin Nutr. 2007. pubmed.ncbi.nlm.nih.gov
Kwon HH et al. Clinical and histological effect of a low glycaemic load diet in treatment of acne vulgaris in Korean patients: a randomized, controlled trial. Acta Derm Venereol. 2012. pubmed.ncbi.nlm.nih.gov
Reynolds RC et al. Effect of the glycemic index of carbohydrates on acne vulgaris. Nutrients. 2010. pubmed.ncbi.nlm.nih.gov
American Academy of Dermatology. Can the right diet get rid of acne? Patient information page. aad.org
American Academy of Dermatology. American Academy of Dermatology issues updated guidelines for the management of acne. News release. 2024. aad.org
Atkinson FS et al. International tables of glycemic index and glycemic load values: 2008. Diabetes Care. 2008. pmc.ncbi.nlm.nih.gov
MedlinePlus. Glycemic index and diabetes. US National Library of Medicine. medlineplus.gov