Typically Nandrolone Decanoate (Deca-Durabolin) and Nandrolone Phenylpropionate (NPP) are very hair safe Steroids (they are the same hormone with different esters).
Deca/NPP is slightly more anabolic than testosterone with a rating of 125 compared to testosterone’s rating of 100.
However, it is significantly less androgenic with a rating of only 37, compared to Testosterone’s rating of 100.
The low androgen rating is due to the Nandrolone hormone converting to dihydronandrolone (DHN) instead of dihydrotestosterone (DHT) in the body.
This low androgen rating and zero DHT conversion makes it an ideal steroid for those who wish to avoid the acceleration of hair loss/male pattern baldness.
Typically though, most avid Steroid users will not just confine themselves to using TRT doses of Testosterone and Deca/NPP.
Unfortunately, there are no other steroids that are effective and relatively hair safe except perhaps Anavar and Superdrol.
The really heavy hitting Steroids typically feature a high level 0f androgenicity in the scalp.
Most bodybuilders will eventually want to experiment outside of the realm of Deca/NPP, Anavar, and low doses of Testosterone, and this is where hair loss becomes a real concern.
Even with moderate dosages of Testosterone, those prone to male pattern baldness will very likely experience greatly accelerated and noticeable hair loss.
This is where combatting DHT comes into play, and the first thing most doctors will tell you to take to combat hair loss is Finasteride.
Daily dosing of Finasteride for hair loss prevention can reduce serum DHT levels in the body by 60-70%.
This can be enough to offset hair loss for some, but there are some VERY crucial factors that many don’t consider.
Finasteride Downside #1 For Bodybuilders
Finasteride is a type 2 DHT inhibitor.
It won’t prevent hair loss from compounds other than testosterone and its’ derivatives.
As Finasteride only blocks type 2 DHT, all other DHT drugs will still murder your hairline and Finasteride won’t block any of the DHT from those.
So, Finasteride will absolutely not be effective against DHT created by Dianabol, Trenbolone, Anadrol, Winstrol, Masteron, Equipoise, etc.
Consequently, your options for steroids you can run will be severely limited, as you will essentially only have hair loss protection against mild doses of testosterone.
Finasteride Downside #2 For Bodybuilders
Deca and NPP are hair friendly IF AND ONLY IF you ARE NOT on Finasteride or Dutasteride.
If you are on those then it will literally devastate your hairline without mercy.
That’s right, Deca and NPP, the only relatively hair safe compounds essentially that can actually produce great results, become completely toxic to your hair once you have Finasteride or Dutasteride in your system.
For the longest time, people said to never pair the two because it would result in a ridiculous amount of hair loss that would continue for up to 16 months.
Sometime later, people claimed that this was simply an “old wives tale” and the combination wouldn't cause increase hair loss.
LETS CLEAR THIS UP.
Here's the answer –
NEVER PAIR FINASTERIDE WITH DECA OR NPP
When they are used concurrently, an interesting scenario unfolds; Nandrolone is inhibited from converting into the metabolite DHN (dihydronandrolone) at the 5α-Reductase enzyme.
At least, it's mostly inhibited by Finasteride, and is almost entirely inhibited by Dutasteride.
In addition, the metabolite of Deca-Durabolin is less androgenic than the parent compound (Nandrolone), which means that if you aren't able to convert the circulating Nandrolone into the less androgenic metabolite DHN, you now have significantly more free Nandrolone circulating in your system, which is more androgenic and has a far greater likelihood of wreaking havoc on the hairline.
So in short, the potential of Nandrolone for hair loss is much more than the less androgenic metabolite (DHN – dihydronandrolone), so it’s a safe bet to stay away from it completely.
I personally know several individuals who used Deca because it is such a hair safe drug, but they also started Finasteride because they were told by their Doctor that it is the best medication available for hair loss prevention, only to end up with a catastrophic reaction between the two compounds resulting in the devastation of their hair.
If you are on Finasteride or Dutasteride, STEER CLEAR OF DECA AND NPP.
If you use Deca with Finasteride and have no issues with hair loss, you probably weren't genetically predisposed to male pattern baldness in the first place in my opinion.
What If I Want To Use Deca Or NPP And I Also Want To Prevent Hair Loss?
The only way to do this is to run a potent anti-androgen like RU58841.
A couple years ago when I first was looking into RU58841, I was trying to find a log of someone who had used RU58841 concurrently with Deca or NPP to see if the same catastrophic Finasteride reaction would occur if I were to combine RU58841 with Deca/NPP use.
I scoured the Internet and could not find 1 single log of someone having tried them both at the same time.
I took it upon myself to guinea pig it, as NPP was my favourite bulking compound at the time.
If you have read my RU58841 article, you will know that I was in a state of severe diffuse thinning prior to starting RU58841.
At this state of diffuse thinning, I was also already about 1/3 of my way into a cycle of Testosterone and NPP.
I started with 50mg of RU58841 applied once per day, and within a week I already noticed that my shedding had dramatically decreased. I went from losing 50-100+ hairs in the shower drain each shower to literally 1-5 hairs per shower.
Over the next couple months, I noticed significant density/thickness returning to my hair as I was now losing hair at a rate far slower than the rate at which I was growing it.
Within a couple months while still on my NPP cycle, I had regained everything I had lost from all my previous cycles, and my hair looked as good as it did several years ago.
Obviously this experiment was super risky, as I could’ve ended up screwing myself far worse if RU58841 just so happened to have the same reaction with Nandrolone that Finasteride/Dutasteride has, but I lucked out, and uncovered a fantastic hair loss preventative measure for bodybuilders.
RU58841 can be run safely with Deca and NPP without having to worry about that negative interaction that Deca/NPP has with Finasteride.
This is just another reason why RU58841 is the far superior option for hair loss prevention in my personal opinion.
And this isn’t even considering the fact that RU58841 also provides protection from ALL types of steroids, not just type two DHT drugs.
Just like I said in the article I wrote over a year ago about RU, I still feel exactly the same about its’ effectiveness and I will be using it for the rest of my life unless something better gets invented.