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Naming a weight loss supplement “Skinny Gal” is just asking for trouble in this day and age, but Rockstar have gone and done it anyway. Brave or stupid? We’ll probably find out at some point in the future! But it is undeniable that this supplement is already standing out from the crowd, even if it is down to steering into the skid. Fat burning supplements have been controversial for a while, so why not go the whole hog and choose a controversial name?
The idea behind this supplement is to help you burn fat by combining two approaches. Increasing your metabolic rate with ingredients such as caffeine (thermogenesis) as well as suppressing your appetite. Making it easier to stay on a diet. This will help create a calorie deficit, it will increase the calories you burn, and help you to consume less calories. Provided it works of course!
In this article we are going to be taking an in-depth look at Skinny Gal by Rockstar, a thermogenic with appetite suppressant qualities. We will look at the ingredients, assess the claims made, see what the customers themselves are saying, and ultimately decide whether Skinny Gal is a supplement worth spending your money on or not.
Table of Contents
Skinny Gal Ingredients
There are a LOT of ingredients contained within Skinny Gal by Rockstar. Most of these are kept within a proprietary blend though, meaning we don’t know how much of each ingredient is present. This makes it difficult to properly review the product; how do we know whether an ingredient has 1mg, 10mg, or 100mg in each serving? We don’t. Which means we can’t say whether that ingredient is going to be effective or not.
As such, we are going to take an in-depth look at the ingredients that are not in the proprietary blend (garcinia, African mango, conjugated linoleic acid, white kidney bean) and then assess the proprietary blend as a whole.
This is a fruit extract that is insanely popular among fat loss supplements, because of a study on rats that showed that it reduced food intake and prevented weight gain. Sadly, as this examine.com article points out the way that it works will be beneficial for rats but not humans. 
As the article points out “it is still commonly sold as a dietary supplement in part because it is cheap to produce and not everybody knows of its demonstrated failures in humans”. In short, its effects will be so mild that it doesn’t influence humans any better than a placebo. So, not a great start!
African Mango Seed (25mg):
There is some (very weak) evidence that African mango seed can lead to a slight reduction in weight, but the studies that have found an effect have all been funded by supplement companies so you have to be sceptical. The theory is that it may work by suppressing appetite, possibly due to it being high in fibre.
Conjugated Linoleic Acid (15mg)
Unreliable evidence as to whether this works or not, let’s just say that to date there are no credible studies that have found CLA to be in any way effective at burning fat or suppressing appetite.
White Kidney Bean Extract (10mg)
This ingredient is kind of interesting, as it appears to work as a carb-blocker. This doesn’t mean that you can eat as many carbs as you want without worrying about the calories (but how awesome would that be?). All that it means is that your ability to absorb starches would be reduced. Taking white kidney bean extract may help to reduce the calories of a starchy meal slightly. We’re not talking big changes, but every little helps, right? White kidney bean extract may also help to prevent colon cancer.
Proprietary Blend (235mg)
- Caffeine Anhydrous – excellent fat burning ingredient, but definitely way too low to be effective as the entire proprietary blend is only 235mg and the dosage of caffeine needed for fat loss is around 200-300mg.
- Raspberry Ketones – Completely useless ingredient that science has disproven multiple times.
- Green Coffee – May actually help with fat loss, but so far only one study has found any effects. 
- Hoodia – No effect on appetite, and may even be toxic to humans. 
- 5-HTP – Annoyingly, 5-HTP is an effective appetite suppressant, with several studies showing that high doses of 5-HTP can reduce food intake. However, there is no way that the amount of 5-HTP in this proprietary blend is enough. The studies that showed a significant drop in appetite involved dosages of 700mg, 900mg, and 8mg/kg (so a 50kg person would require 400mg). The proprietary blend is only 235mg so there is zero chance that this ingredient will be effectively dosed.
- Turmeric – Turmeric and its active ingredient curcumin has many health benefits, including acting as an anti-inflammatory. There is a theory that it may therefore help inflammation caused by obesity, but there’s no evidence of it helping with weight loss.
- Guarana – A source of caffeine, but again there is almost no chance that this is correctly dosed. Caffeine, of course, helps to tackle fatigue, potentially helping you to exercise for longer. It also raises metabolism, helping to burn more calories. There is also a small amount of evidence so far (from test-tube studies) that guarana may suppress fat genes and slow down fat production, though this still needs to be replicated in humans.  Either way, Skinny Gal is unlikely to contain an effective dose of guarana.
- Rhodiola – An excellent ingredient, great at reducing fatigue. However, a very low dosage would be 50mg … and we’d hazard a guess that there’s little chance that there is more than 10mg in this proprietary blend.
- Cayenne Pepper – A great ingredient in fat burners. May help boost your metabolism effectively if correctly dosed …
- Apple Cider Vinegar – probably included because of claims that taking garcinia and apple cider vinegar together gives a further boost to weight loss, though this is unproven. Apple cider vinegar does appear to have some mild appetite suppressing abilities and may help to manage blood sugar, but a decent daily dose is 30ml, spread out between meals. Again, we’d hazard a guess that there’s not enough in this proprietary blend to make a difference.
- Papaya Leaf – Papaya as a fruit is often recommended as part of a weight loss diet as it is very low in calories and contains fibre that can help you to feel full. We’re not sure what purpose using the leaf has here, and Rockstar certainly hasn’t explained it in their marketing. Note that there are claims that papaya is unsafe for pregnant women, though we would suggest pregnant women shouldn’t be using an appetite suppressant or fat burner anyway.
- L-Arginine HCI – More commonly seen in pre-workouts because of its ability to boost nitric oxide and combat fatigue, not likely to do anything directly for weight loss
Skinny Gal by Rockstar Formula Analysis
So, there you have it. There are a few decent ingredients in Skinny Gal – caffeine, guarana, cayenne pepper, rhodiola, green coffee – but they’re crammed into a 235mg proprietary blend alongside another seven ingredients that do little to nothing for fat burning or weight loss. There’s very little chance that any of these are adequately dosed enough to work.
Plus, Rockstar waste another 80mg on further pointless ingredients (garcinia, African mango seed, CLA). Get rid of these, boost your effective ingredients more – AND TELL US YOUR DOSES – and we’ll be more favourably inclined to rate you well. Add a proven tried-and-tested appetite suppressant ingredient like glucomannan, and we might even be impressed.
Unfortunately, Rockstar have done none of those things and seems to prefer instead to rely on all filler, no substance, and a LOT of hype.
Pros of Skinny Gal
- Contains caffeine which can boost your metabolism
- Rhodiola can reduce fatigue
- Turmeric has health benefits
- Cayenne Pepper can boost your metabolism
Cons of Skinny Gal
- Filled with useless ingredients
- Uses a proprietary blend
- Controversial ingredients such as Hoodia and Papaya Leaf
- Possible use of fake reviews on Amazon (see below)
The reviews of Skinny Gal from Rockstar on Amazon are phenomenal. So much so that we thought we would check out the trustworthiness of the reviews using reviewmeta.com.  Turns out 56% of the reviews were classed as “potentially unnatural”. Bringing an average score of 3.9 out of 5 stars (5,209) down to 3.6 out of 5 stars from 2,266 reviews.
The website reviewmeta.com looks for unnaturally written reviews, phrase repetition, suspicious reviewers, and ratings trends to analyse whether there are fake reviews that have been planted on Amazon. Needless to say, a 56% fake review score is pretty poor. Now, we can’t say for sure whether these reviews are fake but considering how poor this product is it wouldn’t surprise us!
After reading 20 reviews that all say, “it gives me energy” and mention 30lbs or more of fat loss, we’re certainly not sure how real these are. No fat burner is going to lead to 30lbs of fat loss on their own, and an ethical company will point out that diet and exercise are the main drivers of fat loss; a pill will only contribute that extra 5-10%.
Due to the nature of the product, Skinny Gal should not be touched by anyone who is pregnant. Particularly considering that one of the ingredients has been traditionally used for inducing abortions!
It’s hard to say whether there will be any side effects though, as we have no idea how much caffeine, cayenne pepper, or green coffee there is in each serving. We’d say not much though, as the proprietary blend is only 235mg. If most of the blend is caffeine (and we’re not certain it is) then you could potentially expect headaches, nausea, heart palpitations, and flushed skin.
How to Take It?
You are instructed to take one capsule each day just before a meal.
Who Takes It?
This product is aimed at women, younger women in particular. Pregnant or nursing women are encouraged to avoid it (sensible). There is nothing stopping older women from using this supplement, but the packaging and name are clearly aimed at a young demographic.
Where to Buy
Amazon is the best place to source Skinny Gal, though we have also seen it available on eBay. Not that we’re prejudiced, but the idea of purchasing supplements on eBay feels super sketchy to us! Probably best to stick to Amazon if possible.
Conclusion on Skinny Gal by Rockstar
We don’t like product assassinations, but this really is the absolute worst of its kind. Hiding most of its ingredients behind a proprietary blend. Under dosing ingredients, using ingredients such as CLA and Garcinia, which have been proven not to be effective. Then packaging it all up in a product that is literally called “Skinny Gal” and hyping it up. Awful!
There are so many better fat burners out there, products that do the industry justice. But for every good fat burner, there are products that set the industry back. Rockstar will know that Garcinia does absolutely nothing. They’ll know that CLA is basically useless, they will know that their 5-HTP is underdosed. So why are they selling this?
We’d like to support products designed for women in a male-centric supplement industry, but we just can’t recommend this one. Having a ‘cool’ name and throwing in buzz-sounding ingredients regardless of whether they work or not does not convince us of the product’s integrity.
Do yourself a favour and spend your hard-earned money elsewhere!